2 Min. Tip: How We Use Eggshells in Our Garden (Eggshell Calcium)
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- เผยแพร่เมื่อ 6 ต.ค. 2024
- In today’s Two Minute Tip, I’ll show you how we use eggshells to improve soil fertility.
Eggshells contain a number of minerals that are essential to plant growth, most notably calcium, which plays an important role in the strength and thickness of plant cell walls. Sufficient calcium in the soil also helps prevent blossom end rot, which I’ll discuss later.
Sources: www.ncbi.nlm.ni...
OYR is all about growing a lot of food on a little land using sustainable organic methods, while keeping costs and labor at a minimum. Emphasis is placed on improving soil quality with compost, and mulch. No store-bought fertilizers, soil amendments, pesticides, compost activators, etc. are used.
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I like how you get right to the point without a lot of extra chit chat. Thank you
Truth!
People like you lack appreciation, he kept it to the point. Well done I say.
This 2 minute video had everything i needed! Quality content! Unlike all those useless long rambling videos with so much useless words! Thank you so much!
Thanks!
Finally someone who know the WHOLE truth about egg shell recycling & BER! Best two minute on BER on the net.
Best answer I have got in over 40 year of organic gardening.
Thanks, Dona!
I have found a really easy way to dry and use the egg shells. I save the bottom half of egg cartons and put a half of a shell in each to dry. Then I just save them in a plastic shopping bag until I have a bunch. Then I put them in the BLENDER, adding more as they are pulverized. You end up with this very fine powder which you can then easily add to any garden.
I love this.not throwing away my eggshells anymore. Didn't know about the grinding and microwaving
I found that egg shells cured my blossom end rot problems after about a week and I regularly topped up the supply every month or so. My soil was poor to start with, but it could have also been caused by irregular watering etc, I'm not 100% sure but egg shells seemed to solve the problem so i'll just go with it lol. Also, It's a great way to get more usage out of your own resources :)
xphilli Calcium deficient soil can lead to blossom end rot, though usually it's caused by transpiration issues in the plant. We had a similar experience to what you described many years ago when we planted tomatoes in the native soil in our backyard. All of them developed blossom end rot. Adding a calcium amendment fixed the problem. With our current gardening practices, we never see blossom end rot.
Thank you for writing subtitles because that's make me understand more efficient
You're welcome!
Great video on how to use eggshells as an organic plant supplement!
Thanks, California Gardening !
OneYardRevolution | Frugal & Sustainable Organic Gardening
@@OneYardRevolution you mentioned the microwaving the eggshells for 2 minutes. Do I need to peel out the inside membrane lining?
Breakfast Tacos are popular where I live and the larger convenience stores have a kitchen section and make them fresh. I asked the people at my local store if they would save the eggshells for me if I provided a clean receptacle. The answer was yes and given on the Friday night I delivered the clean, lined, kitchen waste can with labels on each side saying "EGG SHELLS ONLY". The next day I carried home the mornings 'harvest'. The manager told me how many boxes of eggs they did that morning and it equated to 3,000. Most of those always go into a landfill.
Great job putting the eggshells to good use! I'm convinced we could solve our soil fertility issues if we just started composting all our organic waste.
You should get their coffee grounds too. A good source of slow release nitrogen. I give my worms espresso grounds and now they think they are yuppies. (LOL)
Mesh Grow Bags 😂
Great tips! I have found that you really cannot ad to much calcium in the form of eggshells, because plants will only take up what they need. I am so excited to show my newest found favorite source of calcium. It will be when I till the garden in for the fall.
***** Thanks, Luke! I look forward to seeing your new favorite source of calcium!
OneYardRevolution hint: It comes from an invasive species of most freshwater streams and great lakes. ;)
Grinding sure makes sense. I usually end up with compost full of eggshell bits :)
Yeah, the eggshells break down a whole lot faster and the sooner you can get them through a worm, the better. Thanks for watching!
OneYardRevolution | Frugal & Sustainable Organic Gardening What about food grade powdered calcium carbonate? Can I just use that instead of egg shells? Would it still be considered organic?
I dry and grind up (coffee grinder) banana and orange peels as well.
I heard hair works too
I've noticed in your more recent videos that you have visible egg shell bits in your garden. Have you stopped blending them? If so, what made you change your mind and are there any other egg shell related changes you've made? Thanks for the great videos, you're a great gardener and the time you take to efficiently explain things is much appreciated!
Thanks, Richard! I still grind them sometimes but I also crush them by hand.
Great video! Provides a quick but thorough how-to, and dispels myths in a very compact format.
Tim Sheets Thanks, Tim! I appreciate it.
i use egg shells as well. but for my beds this year i used rock dust added before planting and as a watered on top supplement. I was happy to say i did not end up with any calcium problems in my plants using this method this year.
I'm glad to hear you didn't have any calcium issues in your garden! We never see calcium related problems, including blossom end rot.
I am a new gardener n did is d best video. Gets straight to d point. Some take 3x d time n nothing special. Tq
Need to find a baker who throws away loads of egg shells! Don't think I could be bothered rinsing and micro waving them though. How about throwing them onto the dying embers of a garden fire and incorporating them into the wood potash before adding them to the compost heaps Patrick?
+Michael Ball That should do the trick, Michael!
Hi Patrick! Yes, eggshells are a great source of calcium (because they're small sized chalk). I personally would never add eggshells to hot compost piles for two reasons:
A saturated calcium carbonate solution from eggshells reaches a pH of 8-8.5. Since hot composting degrades proteins and nitrogen compounds very quickly, a significant amount of ammonia gas and ammonium ions are released. by raising the pH in the compost with the addition of eggshells you drive out more ammonia by shifting the equilibrium more to the ammonia gas side rather than the ammonium ion side.
Calcium deficiency in soils is very often the result of prolonged intense precipitation. Soils on ridges that are exposed to lots of rainfall are therefore depleted of free Calcium ions. The easiest way to replete the plant available calcium stock in the soil is by watering with an alkaline wood ash solution. Wood ash has most of its calcium in the form of Calcium oxide, which is highly soluble and turns into solubilized Calcium hydroxide when added to water. With Calcium carbonate, you can never feed as many free Calcium ions as with wood ash (or slaked lime).
I think many fungal plant diseases could be prevented by adding a bit of wood ash to the irrigation water (or foliar feeding a wood ash solution of pH ~9), since many garden vegetables require high amounts of calcium to thrive which are seasonally immobilized, especially in the summertime because CaCO3 is less soluble at higher water temperatures.
Best,
Jonas
Hi Jonas. Thank you for sharing the information!
We don't have a fireplace but add small amounts of wood ash to the garden when we get our hands on some. From what I've read, adding small amounts of eggshells shouldn't have much of an impact on the pH of compost. The eggshells comprise only a tiny fraction of a percent of the total compost volume.
yes it's definitely a matter of dose, a few eggshells don't raise the pH during composting. In addition, calcium carbonate is least soluble at higher temperatures. I also think that adding eggshells to a kitchen waste based compost is beneficial, since some kitchen wastes tend to be high in organic acids. Since my main composting material is urine, straw and feces, which already have a high pH due to the ammonia, I don't put the eggshells in. By the way, I've developed an outstanding thermal composter, a building documentation will soon be available for free.
Jonas Léchot Please let me know when the documentation is available for your thermal composter!
OneYardRevolution Sure!
Fantastic 2 minute tip my friend ! I'm much more lazy with my application. I usually store the shells in my shed for a year or so and then crush them using a pot and apply to my mulch layer. They break down much more slowly however I have never had an issue with calcium deficient soils so i don't worry about it !
Thanks, Stephen! We like to grind the eggshells for the worms. They're almost like our pets at this point. ;-)
Good useful pets to have ! :)
Wonderful 2 min tip. waiting for more.
Thanks, MrMac5150 !
That was very helpful. Thank you.
I am going to try and use a blender and grind the eggshells. Before I just use it to mulch or mix directly to my potting mix.
Will try this thank youuuu so much!!!!
Good information. Never thought to grind them up. I add the crushed ones (after cleaning) to my wormbin and the worms seem to do a good job on them.
Thanks, Nicole. Crushing them works great too. Grinding will just speed everything up a bit. Thanks for watching!
What an awesome natural fertilizer, its simply great, well done.
Thanks!
Thanks for the tip! I can't get over your soil! So fabulous!!! ~ Melanie Lynn
+Road to the Farm You're very welcome!
Thank you for short and useful hints. It is much better than lengthy clips.
+Song J You're very welcome!
Very informative!! I actually filmed an episode on using egg shell powder for food and garden. Just haven't had the chance to publish...thank you for another great video!
Thanks, Wendi!
I repurposed a coffee grinder just for this task and a few others. I feed the powder to my BSFL, along with dried and ground fish scales. When the season comes to a close for the BSFL( I raise them outdoors in FL to remediate veggie scraps), I then use the BSFL waste in a hot compost, which eventually is teaming with wigglers. This extra step really produces fine finished compost/castings( maybe bordering OCD), but I never have to stockpile stinky veggie scraps. The soldier fly larvae eat it up as fast as we produce it!!
That's a great approach! We've never raised BSFL, but I've seen them in action in videos and they can really take care of some food scraps! Like you said, you must have some really fine compost after both the BSFL and red wigglers process it.
yep. you got everything right. I grind eggshells up in a pistle/mortar. Wash as you said. nuke for a couple minutes as you said. Tried baking once in the oven at 400 degrees lol. mistake. stunk the whole house up. you don't have to go the compost/earthworm way. I sprinkled my ground up egg shells on top of the potted soil. Did a test comparing ones without. Noticed a big difference. As you said, stronger cell walls. Plants with calcium carbonate(egg shells) had stockier stems/branches. more rigid plant. greener more turgid leaves. definitely no issues with nutrient uptake compared to the ones without. recommend egg shells to gardening, ground to a pulp and cleaned and sterilized ofcourse.
Some folks also add them to their aquaponics system to help raise pH...
Cheers mate :)
Rob Bob That makes a lot of sense! Cheers!
Add them how? To their medium?
@@OneYardRevolution
Can I use butter milk( made of curd and water it is made by adding lot of water in curd like semi thick like low fat milk) we drink it in lunch and dinner can I use butter milk instead of egg shell..is it work...or it may hazard to my chilli and lemon plant...???
Thanks for your videos. They're great - thorough, complete and enjoyable/educating to watch.
Thanks for your encouraging feedback, Phil!
Great tip on grinding the shells, I've been putting them in to the worm bed "whole" and did notice they take quite some time to be consumed.
Thanks! Yeah, they take a while to break down on their own. I still find eggshells in the garden from back before I started grinding them.
Thanks for the great information. It's nice to know why we do things a certain way!
You're very welcome, David D ! Thanks for watching!
Very informative and short to the point! I never would've thought to put the shells in the micro... thanx!
+Cheryl Brockman Thanks, Cheryl!
Thank you for these tips
We've gotten several cups ready to use and are always looking for helpful information. 😊
Useful information, well presented as usual. I get so much more out of your short informative videos than I do out of the much longer, meandering videos of gardeners named Ray or John. Your formula is working. Keep it up!
Thanks, Lanium !
Lanium I
Great info!
I've heard that comfrey is also a great source of calcium. All my egg shells are crushed in the hand and fed back to the chickens with the kitchen scraps. I use the shell grit mix you get for poultry on the garden. It's very slow release ;)
Ben Jamin You're right. Comfrey is a good source of calcium as well. The chickens will really help to break down those eggshells and make the calcium plant available sooner!
Like these type of short videos
Thank you for being concise and informative!
th-cam.com/video/vQjmIoDPIF0/w-d-xo.html
Okay. I didn't used to microwave or crush my eggshells. I simply threw the shells into the compost pile. I changed my ways after watching one of your earlier videos. But now I think I should start actually grinding the shells too instead of just crushing them. Thanks for the video.
You're very welcome, TheSajeffe! Grinding them will definitely speed up the process quite a bit and make the particles small enough for worms to ingest. Thanks for watching!
Thank you. This really helps, I just wanted legit information about using eggshells in my garden.
I knew it was good to use egg shells in my compost, but didn't know why. Now I do, thank you!
You're welcome!
Perfectly to the point and informational! Thank you
I use my vitamix dry carafe to grind egg shells and sprinkle some in the drip line of my citrus trees. It really helped, along with banana peels. I agree, most everything should go through composting on its way to the soil. Great video here.
+Jim Hervey Thanks, Jim! I'm glad to hear your putting those free resources to good use!
Nicely done Patrick!
Thanks, Elyse!
best eggshell vid ever.
Thanks!
OneYardRevolution | Frugal & Sustainable Organic Gardening
Thank you , straight to the point and useful information
This is a great idea, thank you for sharing it with us.
Thanks, MrWilariba !
That's a good tip for those living in areas where the soil is acidic so eggshells are fine in that area since the acids in the soil will break them down. But where I live, an arid area where the bedrock is limestone and chalk, putting eggshells into compost and into the ground only exacerbates a problem of alkalinity. We already have plenty of calcium in our soils as it is, too much, in fact.
Thank you for sharing your tips on gardening.
Servus mir gefällt das mega gut was du da machst. Mach genau so weiter! I like :) Daniel
Straight to the point. Thank-You🙏🏾
That is for this tip , I had a months worth of shells and I tried crush them by hand, I never thought of using a vita mix machine, it ground the shells nicely. Half my tomatoes get ruined from blossom end rot because I was growing them in 5 gallon bucket’s which the soil dries out quickly , this is the first year I’m using grow bags that I got in 25 gallon size, shouldn’t dry out as fast
THANK YOU for this useful, to the point vid! How do you sanitize the shells if they've already dried. Didnt realize they had to be cleaned before harvesting for the garden?
I use a mortar and pestle on mine (I don't have a food processor, but I do have a very good blender...might try that). To combat microbes, I rinse them then spray them with vinegar (which I keep by the sink for cleaning produce anyway) then let them dry. ...but I love your Microwave Idea....I never thought of that. My wife does get weary of plates of egg shells waiting to dry in the kitchen,.,
Yeah, the microwave is a real quick way to process them and if it makes your wife happy all the better!
OneYardRevolution
Did it with eggs this morning. LOL.
Thanks for that 2 minute tip 😉❤
Excellent!
Thanks, Pople BackyardFarm !
Crush up 2 doz. Egg shell dry ang place in a big 10 Qt. pan fill with water boil 20 mins
Let cool ...Pour one 1 cup mixture into 1 gal water ..Use everytime u water plants .
I've had great and fast recovery uesing root organics cal and mag was so happy I got it a job bag 1 tsp per gal and huge benefit for me.
Another great vid. Patrick! Interesting fact on blossom end rot and great tip on pulverizing the egg shells. I've always used egg shells in my garden, but recently I've started to use dissolved TUMS as a calcium additive. Do you know if this actually works or am I just spinning my wheels?
Thanks, ***** ! To the best of my knowledge, adding Tums should add Calcium to the soil as well. I'd just use the eggshells, though, unless there's a calcium deficiency in your soil.
Hey, love your videos! I have been watching from the beginning and am learning a whole lot! One question keeps popping up from multiple videos related to your vermicompost, what are all the black spots on the insides of the bin? And do the bins have a strong or mild smell to them?
+Joshua Shermer Thanks, Joshua! I'm glad you enjoy my videos and appreciate you watching. Those are worm castings (i.e., worm poop). Worm bins don't smell at all as long as you keep the food covered with a thick layer of shredded paper/cardboard and don't let the bin get too wet. The castings themselves have a pleasant earthy smell. I hope this helps!
+OneYardRevolution | Frugal & Sustainable Organic Gardening Thanks for the quick and informative response! I look forward to starting my own worm bin or two by this spring. Another question I have pertains to how you start your seeds indoors and the process you use for germination etc... a video about your specific setup would be great!
+Joshua Shermer You're welcome Joshua! That's an excellent idea for a video! I hope to share that information later this winter when I start seeds indoors (and some outdoors too).
great info - short and sweet - thanks much !
Thanks!
Thanks. Excellent. I highly recommend all gardeners to subscribe to your TH-cam which is among my favourites.
Thanks, Edwin! I appreciate your support.
I'm so glad I watched this before dumping my egg shells. I didn't wash or microwave them, if I don't plan on eating the fruit it's applied to is it safe? Or does the possibility of contamination carry on??
There's very little risk of contamination
What if I didn’t microwave the eggshells before crushing it and putting it in the plants?
I wonder the same thing
Thanks for posting this useful video I came across looking for tips on making water soluble calcium from eggshells for use in hydroponics tomatoes. I collected a large quantity of eggshells over time, and after washing, drying in an oven and finally pulverizing in a food processor I now have about ten pounds of dry, powdered eggshells. I am at a loss at this point as to in what ratio of the powdered eggshell and white vinegar to mix. More importantly, even if I mix the two in some ratio, how can one determine the concentration of calcium in the final product. Without knowing the concentration of calcium, how does one know how much of this solution to add to, say, 5 gallon of water for use in growing tomatoes. Can I use a ppm meter to determine calcium concentration, and what is the optimum ppm concentration of calcium to use. Would appreciate any insights on this from your experience. Thanks.
You're welcome! Though I've never done it, I think you would mix 2 parts vinegar to 1 part eggshells by volume. Unfortunately, I don't know how much plant available calcium this would create or how much to apply in a hydroponics system.
Nicely explained sir
Thanks, Dave!
Your helping snails with their shells yay!
Thank you so much from Iraq
Egg shells, I bag them in a gal zip lock bag put them in the freezer till I have a full gal bag, to the oven on a old cookie sheet at a temp of 250 for a hour or two, just turn off the oven and let cool down then crush them to dust.
Great approach, Kennethe!
Thanks, brother I thought there'd be some kind of use!
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Great quick video. I was just broadcasting some crushed shells today. I was wondering if they actually did something. I'll stay adding them to my worm bin more. Can you go to far in using them? Like too much?
Thanks, Joost G ! I think it would be difficult to overdo the eggshells unless you have a very small garden and a very large family that eats a lot of eggs. ;-)
Thanks a lot for the tips Sir.
+Unni Sivadas You're very welcome!
I had a back full of egg shells from a year ago I have forgotten about. Do you think I'd still need to rinse them and/or microwave to kill any germs or bacterias at this point??
It's hard to say. Just leaving them out in the sun should disinfect them.
OneYardRevolution | Frugal & Sustainable Organic Gardening okay cool.
Thank you for this so much !!!
Great video! Can I use boiled eggshells, or should I only use fresh cracked eggshells?
Will adjust how I use eggshells after seeing this.
Nice tip thank you for sharing
Great video! I'll have to either microwave or bake my next batch of eggshells; didn't think about salmonella being a danger when incorporating my first batch LOL. Isn't the Vitamix great?
Thanks, OhHowHappyGardener ! Yeah, our vitamix is well over 20 years old and still going strong.
thanks ... much appreciated
We tried grinding these up in an expensive Blendtec, and it pretty much sliced the plastic all over the inside of the container. It was like blending course sandpaper, not good. Not trying that again, be careful with the Blendtec and blending eggshells.
+Andy Rosebrook Thanks for the word of warning, Andy!
OneYardRevolution | Frugal & Sustainable Organic Gardening just
Andy Rosebrook yes, I have had same issue
I love your videos
ghayath2011 Thanks! I really appreciate you letting me know.
Thank you. I have heard that you can mix egg shells (powdered) with vinegar to make calcium supplement for us as well.
You're welcome! I haven't tried making calcium supplements yet.
Here is the recipe: th-cam.com/video/jiH-ZFocKDc/w-d-xo.html
Tony is great.
great tip---thx
Thanks, Dave!
Thank you, great help. One question, doesn’t microwave kill some of the nutritional values?
Thank you
You're welcome, Abir!
good job
Thanks!
Patrick, I notice you have some hostas in the background during this video. Do you find those tend to lure slugs or snails to your garden?
I've got a bunch of agapanthus in the front yard, and that is snail heaven. Not nearly as big an issue in the back, but I do make liberal use of food-grade DE and coffee grounds.
Cheers!
+Seamus Nalaoch Slugs definitely like the hostas, but then again they like so many of the plants we're growing! We got a break from the slugs the last couple years because our winters were so brutally cold. With milder weather this winter, I'm afraid we'll see more of them this year.
Google the product Slug go. It's an organic product my husband stumbled on when the beer, and DE, and other tactics were to work intensive, or just didn't work. It worked great and we have some ready to go if the onslaught begins again here in SW Wisconsin.
Love your videos! I do have a question if you don't mind. Can I use oak leaves in my compost heap? I have been told the tanic acid is not good for composting. I have a ton of oak leaves, horse manure, chicken poop, used straw, food scraps and eggshells. I live in zone1 I think, northern California, near the Oregon border.
Thank you for any answer you may give!!
JoeAnn
Hi JoeAnn. Oak leaves are fine to add to your compost pile. Studies have shown that oak leaves little effect on acidity as they decompose. Thanks for watching!
OneYardRevolution Thank you so much Patrick!!!
Well, personally i simply apply rabbit urine. It's rich in nitrogen and calcium. So powerful is rabbit urine that you need to dilute with water using a ratio of 1:5, otherwise you will scotch the plants. Rabbit urine is also good because its a natural way of fertilizing your plants, an excellent option for organic farming enthusiasts. As it is 100% natural, there is no waiting people from day of application to first harvest date - you can even harvest soon after applying it. Another advantage of rabbit urine is that it also works as an insecticide. The strong smell that it produces while applying it and its sour and burning sensation kills garden pests such as aphids.
Thanks for the video. I was kind of excited to try microwaving the eggshells because it meant not having to turn on the oven in the Florida heat. I decided to microwave the eggshells in 1-minute intervals "just in case" and, wouldn't you know it, after just 45 seconds on default power, I began to notice an unpleasant burning egg smell ... sure enough, after just 1 minute, about 1/3 of my eggshells had big, brownish-black spots on them where they had burned. Of course I had washed them and dried them well before microwaving. I had to throw the burned shells away, and I'm afraid to try microwaving the rest of them again just now.
Any idea what went wrong? Maybe you could share just a bit more information on how you prepare your eggshells before microwaving?
Microwaves change the molecular structure of anything you put in them. It’s radiation, I’d still use the oven for 10 min. But that’s just me. There’s a reason why they’re illegal in many countries except the US where they want you to die young of diseases which is why they poison us. 🤷🏻♀️🥴
Good
good video
+Bill Kimp Thanks, Bill!
I put them in the compost pile without worrying about salmonella. Is it just because the heat in the compost pile will kill the salmonella.
Maisie C A hot compost pile (above 130 F) should kill the salmonella. We microwave ours because we put a lot of them in worm bins and cool compost piles.
Hi ,my basic question is can i mix egg shells and cow manures for my garden,thanks
yes
Thanks!
Do you "need" to boil you eggshells before you bake them an put them in a blender? Or a pestle grinder?Finally putting them then in the worm farm.
We don't boil ours. Just rinsing and microwaving for a couple minutes should work just fine.
I like the blender tip! So you just add eggshells into the blender(with nothing else) and it turns into that awesome-looking calcium powder?
Thanks, Binky's Garden ! Yes, a coffee grinder or a high power blender like a Vitamix will do a great job grinding the eggshells down to a powder. Even if your blender doesn't grind them this fine, it'll still help the shells break down more quickly. Thanks for watching!
Patrick, do you need to use the dry container on the vitamin (like you'd use for grinding wheat berries) to do the egg shells, or will the wet container handle it? Ty!
I don't know if you will share any sun chokes this fall/winter. But I would love some to start my perennial garden.
I have a TH-cam channel and want to create a food forest to post videos about. But I am young and as consequence have a very small gardening budget. I could use the support.
We'll see how the harvest goes. This is our first year growing them, so I'm not sure what to expect. Best wishes with your garden and your channel!
thank you
Can you use chicken poop? I really want to know because I have a compost bin, and we might get chickens this spring, and would want to use their poop as a source of fertilizer. Thank you for reading.
Yes, you can use chicken poop. I'd compost it before use.
NJTransit Productions I live in farm country and was told by a farmer recently that you can use manure from any nonmeat eating animal. I found this out because I was joking about seeing ads for chicken manure on the supermarket bulletin board, and happened to joke with the man standing next to me that i didnt need to pay money for poop because I had a dog. Well he took me seriously and said, "You cant use dog manure! Only manure from vegetarian animals! Everyone knows that"! Lol. So, now I know that, and also that some farmers don't have a sense of humor, lol.
I heard that the egg shells do not releases calcium unless you add lemon and leave it for 12 to 24 hours before adding it to your plants.
Thanks for the video.
A small doubt:
Is there anything wrong if we add powdered egg shells(containing salmonella) into the compost pile??
If so, Doesn't just boiling the shells kill them??
You're welcome! Yes, you could boil the eggshells instead. I prefer not to add them to the compost pile without sterilizing them first. The bacteria can grow in temps up to 113 F (45 C).
OneYardRevolution | Frugal & Sustainable Organic Gardening
i already applied my egg shells without sterilizing (boil/ microwave) what should i do
I wouldn't worry about. Just try to make sure the pile gets good and hot to kill possible pathogens.