The Best Way To Use Egg Shells To Power Plants & Recharge Your Soil!

The Simple Garden Life

Are you using egg shells correctly in your garden and flowerbeds?
Egg shells are one of the most commonly recommended organic ingredients for powering up garden soil and plants. And for good reason! Egg shells are rich in calcium, which happens to be a critical nutrient for strong plant cell walls. Calcium is also vital for overall plant health.

Calcium also plays a critical role in the formation of fruit. In fact, when there is a lack of available calcium, common garden ailments like blossom end rot on tomatoes and peppers can be a big issue.
For all of the reasons above, egg shells, which are made up of over 90% calcium carbonate, can certainly help provide calcium to your plants and the soil they grow in.

But here’s the issue – most gardeners don’t use them in a way that maximizes their benefits. Today - Jim & Mary cover the best ways to use egg shells to give your plants and the soil the power it needs!
2026-03-23 16 min Transcript

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<v Speaker 1>Welcome to the Simple garden Life Podcast, a program dedicated
<v Speaker 1>to keeping the yard of gardening simple, fun and always rewarding.
<v Speaker 1>Now Here are your hosts, Jim and Mary Competti.
<v Speaker 2>Hello and welcome everybody to the Simple garden Life Podcast.
<v Speaker 2>I am your co host Jim Competti.
<v Speaker 3>And I'm Mary Competti, and.
<v Speaker 2>Together we are the dynamic duo today talking about the
<v Speaker 2>biggest mistake gardeners make with eggshells and more importantly, how
<v Speaker 2>to use eggshells correctly to power your garden and flower beds.
<v Speaker 2>And you know, we talk about eggshell's NonStop on the website.
<v Speaker 2>We've done a podcast on eggshells and coffee grounds Mary,
<v Speaker 2>but today we get so many emails about it. We
<v Speaker 2>really wanted to cover the subject of how to really
<v Speaker 2>use eggshells the right way.
<v Speaker 3>Right with garden season coming up, it's the perfect time
<v Speaker 3>to talk about this topic.
<v Speaker 2>It is so remind everybody that this is the Simple
<v Speaker 2>garden Life website. You can follow our podcast on simplegardenlife
<v Speaker 2>dot com. Just hit the podcast tab up there at
<v Speaker 2>the top and you can see all of our years
<v Speaker 2>of podcasts. This is our second episode of the twenty
<v Speaker 2>sixth season, and we've got a full slate this year
<v Speaker 2>and really really excited. And today's subject is one of
<v Speaker 2>the ones that a lot of vegetable gardeners and flower
<v Speaker 2>gardeners should also be really aware of before we get
<v Speaker 2>into how to use them, Right, Mary, I think we
<v Speaker 2>have to talk about you know, why eggshells are so
<v Speaker 2>incredible there are.
<v Speaker 3>They're one of the most commonly recommended organic ingredients for
<v Speaker 3>powering both your garden soil and your plants.
<v Speaker 2>Yeah, and for good reason. I mean they're rich in calcium,
<v Speaker 2>which happens to be, you know, a big time nutrient
<v Speaker 2>for strong plant cell walls, but it's also vital for
<v Speaker 2>the overall plant health. We've talked about this before. Most importantly,
<v Speaker 2>people associate lack of calcium with blossom.
<v Speaker 3>Rot right, and blossom and broad For those that don't know,
<v Speaker 3>is that annoying little thing that comes up throughout the
<v Speaker 3>garden season when you think you have the perfect tomato
<v Speaker 3>or pepper growing on your plant and you go to
<v Speaker 3>pick it, or you go to check it and you
<v Speaker 3>touch it and finger goes right through the bottom of
<v Speaker 3>the tomato or pepper.
<v Speaker 2>Yeah, it's just exactly what it sounds like, the end
<v Speaker 2>of the tomato or a pepper where the blossom was
<v Speaker 2>attached will start to rot away and it really ruins
<v Speaker 2>the entire fruit. Now, just to let people know, blossom
<v Speaker 2>in rot, don't confuse that with the first few tomatoes
<v Speaker 2>of the season or the peppers of the season. Your
<v Speaker 2>plants are young, they're very immature. We always get a
<v Speaker 2>ton of emails and messages about, oh my gosh, my
<v Speaker 2>tomato plants just produce their first tomato and they've got
<v Speaker 2>blossom in rot. Remember that when they're young and immature,
<v Speaker 2>those first few tomatoes are probably likely going to have that.
<v Speaker 2>That's why we always tell people pick those first few
<v Speaker 2>fruits off of your tomatoes or even your pepper plants
<v Speaker 2>and allow them to grow. But real blossom in rot
<v Speaker 2>is when that problem continues on through the spring and.
<v Speaker 3>Summer, right And when you have those tomatoes and pepper
<v Speaker 3>plants that are doing that in the early season, it's
<v Speaker 3>most likely, dude, that we're overfertilizing in the stores, or
<v Speaker 3>that they're just young and immature and they haven't had
<v Speaker 3>it ability to absorb calcium correctly.
<v Speaker 2>Yeah, they really are. So let's talk about really what
<v Speaker 2>eggshells do in the long term for your soil and
<v Speaker 2>that calcium. So why are eggshells so important for this Well,
<v Speaker 2>for starters, eggshells are ninety percent calcium carbonate. I mean
<v Speaker 2>that you're talking nine tenths of an eggshell is pure calcium.
<v Speaker 2>I mean that is what can provide that to your
<v Speaker 2>plants and the soil they grow in. But here's the issue.
<v Speaker 2>Most gardeners don't use them in the way that maximize
<v Speaker 2>those benefits for the crops this year.
<v Speaker 3>Right, And we've learned over the years as well. We
<v Speaker 3>used to use eggshells in every planting hole and we
<v Speaker 3>would just crush them up with our hands and throw
<v Speaker 3>them in the planning hole, which does provide some benefits
<v Speaker 3>for the tomatoes and plants in the years to come,
<v Speaker 3>but not for this year's plants.
<v Speaker 2>Yeah, and why is that. Well, let's just go back
<v Speaker 2>to the famous compost pile. Have you ever thrown eggshells
<v Speaker 2>into your compost pile, or for a better part, thrown
<v Speaker 2>them into your soil. You go out one month, two months,
<v Speaker 2>three months later, and there's still bits and pieces of
<v Speaker 2>those eggshells. Why is that? Because they take a very
<v Speaker 2>long time to break down. And when they take a
<v Speaker 2>long time to break down. What's that mean for your plants?
<v Speaker 2>Means they're not going to get those nutrients because they
<v Speaker 2>haven't broken down in the soil where they can absorb
<v Speaker 2>the calcium from the eggshells to really help them.
<v Speaker 3>So the real secret is to making most out of
<v Speaker 3>your eggshells in your garden is how you prepare them.
<v Speaker 2>It really is. I mean, they can correct calcium deficiencies,
<v Speaker 2>and they can help plants not have weak stems and
<v Speaker 2>curled leaves and poor fruiting. I mean it's not even
<v Speaker 2>just for tomatoes and peppers, it is for flowers. Calcium
<v Speaker 2>is such an important part of the overall makeup of
<v Speaker 2>what the soil needs to be healthy and what plants
<v Speaker 2>need to be able to absorb. You know, overly wet soil,
<v Speaker 2>overly dry so calcium has a hard time sofium with
<v Speaker 2>the plants. But there's a lot of times that there's
<v Speaker 2>just not the calcium in the soil that plants like tomatoes, cucumbers, peppers, flowers,
<v Speaker 2>big time annuals, like dreams, all of those that they
<v Speaker 2>just can't absorb it. And when they can't, then all
<v Speaker 2>the problems occur.
<v Speaker 3>However, when properly use eggshells can provide a wonderful, slow
<v Speaker 3>release source of calcium throughout the growing season.
<v Speaker 2>Oh, I mean, it's one of the best. That's why
<v Speaker 2>we always talk about them. So what is this big
<v Speaker 2>mistake that we talk about. Well, we've already kind of
<v Speaker 2>hit on it a little bit. You know, many gardeners
<v Speaker 2>assume that tossing large chunks, even semi crushed egg pieces.
<v Speaker 2>I even saw last week and you know, if it's
<v Speaker 2>on the internet, it's a tree right now. Yeah, right,
<v Speaker 2>But I saw last week where you should just plant
<v Speaker 2>two whole eggs with every tomato plant, and I started
<v Speaker 2>thinking it through it I'm like, Okay, you know, the
<v Speaker 2>yolk and things like that are going to have some benefits,
<v Speaker 2>but you're not getting the calcium benefit from a whole
<v Speaker 2>egg put in a hole, because again, that crush shell
<v Speaker 2>is not going to break down. Egg Shells take a
<v Speaker 2>long time to break down in the soil. I mean,
<v Speaker 2>especially when they're left in pieces. It can take months
<v Speaker 2>even years for that calcium to become available to the plants.
<v Speaker 2>So that means that simply placing an eggshell in the
<v Speaker 2>planting hole it's not going to provide any immediate benefits
<v Speaker 2>to the plant. To that spot during the current season.
<v Speaker 3>So the question is what makes eggshells beneficial for this
<v Speaker 3>year's garden.
<v Speaker 2>Well, there's a really simple thing. That delay that they
<v Speaker 2>have when they're breaking down is what causes it. So
<v Speaker 2>you have to help break those egg shells down a
<v Speaker 2>whole lot more to really help them absorb quickly into
<v Speaker 2>the soil and become a part of it. So let's
<v Speaker 2>take a break, and when we come back, we'll get
<v Speaker 2>to the way we handle our egg shells and how
<v Speaker 2>we plant them and how much we use, and then
<v Speaker 2>more importantly, how we start to store them all the
<v Speaker 2>time year round to really have eggshells on hand at
<v Speaker 2>any moment. We'll be right back after these messages, and
<v Speaker 2>we are back for the best way to use eggshells
<v Speaker 2>in the garden. And Mary, I guess, I mean, what
<v Speaker 2>is the secret?
<v Speaker 3>Well to ensure your curtain garden always gets the full
<v Speaker 3>benefit of eggshells. It's actually best to grind them into
<v Speaker 3>a fine powder before adding them to the soil. But
<v Speaker 3>a lot of people say, Okay, what does that mean
<v Speaker 3>or how do you do it? So you know, it's
<v Speaker 3>actually very easy to do.
<v Speaker 2>Oh yeah, you know, Look, you can go the hard route,
<v Speaker 2>you can get the what's it called a mortal and pest.
<v Speaker 2>I always thank you. I'm not the chef of the
<v Speaker 2>of the two of us, but here's here's the really
<v Speaker 2>easy way get yourself an inexpensive coffee grinder. I mean
<v Speaker 2>you can get them now for eighteen nineteen dollars, just
<v Speaker 2>the small, small hand ones and keep it around to
<v Speaker 2>pulverize egg shells. We use ours. You can put we
<v Speaker 2>crush them by hand. You can probably put I'm going
<v Speaker 2>to say, what six to eight egg shells marion and
<v Speaker 2>a little one, just like you're making coffee grounds. Right.
<v Speaker 3>But the important key here is, yes, we're recommending using
<v Speaker 3>a coffee grinder or some grinder, but it really needs
<v Speaker 3>to be dedicated use to the eggshells.
<v Speaker 2>Yeah, unless you're going to clean that thing out every
<v Speaker 2>single time, and you can. You can wash out and
<v Speaker 2>clean it. But we just like to go to that
<v Speaker 2>inexpensive route and say, okay, this is our grinder for
<v Speaker 2>all the things we're going to use. But you can
<v Speaker 2>grind that down not into small egg shell pieces, but
<v Speaker 2>into a very fine powder and I'm talking talcum like powder.
<v Speaker 2>That's what we do. We just grind it down over
<v Speaker 2>and over. It doesn't take long, and that actually has
<v Speaker 2>a lot of benefits for the plants. But before we
<v Speaker 2>do that, let's talk about storing them. It has a
<v Speaker 2>lot of benefits for us because let's talk about the
<v Speaker 2>years past when we would collect these eggs shells and
<v Speaker 2>we'd crush them by hand, put them in freezer bags,
<v Speaker 2>and we would just fill our freezer over the winter
<v Speaker 2>trying to save and have all this all these egg shells.
<v Speaker 3>Right, So there's a better way to actually store your
<v Speaker 3>eggshells throughout the winter and getting ready for garden season. Yeah,
<v Speaker 3>we're not quite ready to plant yet, No, we're not.
<v Speaker 2>We're still saving all of our eggs shells and for that.
<v Speaker 2>So what we do is, you know, we'll save so
<v Speaker 2>many A lot of people like to put their egg shells.
<v Speaker 2>We get all these questions, so I'm just going to
<v Speaker 2>cover them right now because I think it's important to
<v Speaker 2>talk about it. Do you have to dry them? Well, yeah,
<v Speaker 2>they're going to grind a whole lot better. We usually
<v Speaker 2>we get a grinding process. What every three or four weeks,
<v Speaker 2>we'll save our eggshells, will crush them by hand, put
<v Speaker 2>them in a freezer, luck bag, throw them in the
<v Speaker 2>freezer and when we get enough, we'll take them out
<v Speaker 2>and we'll freeze them or excuse me, not freezom we'll
<v Speaker 2>grind them up into that powder. You can, and a
<v Speaker 2>lot of people love doing this. Put them on a
<v Speaker 2>cookie sheet, put them in your oven, I think one
<v Speaker 2>p fifty and dry them out. We've never really done that.
<v Speaker 2>It's not necessary. People say, well, can you get this? No,
<v Speaker 2>they're eggshells. They're not going to carry all the other
<v Speaker 2>things we talk about, but a lot of people like
<v Speaker 2>to heat them up to dry them, and you certainly can.
<v Speaker 3>Right The big concern is salvonilla, and you know you
<v Speaker 3>definitely we get the questions should you rinch your eggshells
<v Speaker 3>before you store them or crush them? Sure, printing is
<v Speaker 3>not going to hurt them. Putting them into a powder
<v Speaker 3>or grinding them into a powder is going to help
<v Speaker 3>get rid of at of that access to salvanilla. But again,
<v Speaker 3>you can rinse them and then dry them and freeze them,
<v Speaker 3>or you can put them in your oven. Most ovens
<v Speaker 3>are about one eighty to two hundred degrees and you
<v Speaker 3>can dry them out before you grind them. But you know,
<v Speaker 3>it's just an important thing. Is that we want them
<v Speaker 3>to to powder before they go into your planting holes.
<v Speaker 2>Yeah, and then you freeze that and there's really little
<v Speaker 2>worry of anything. So once you get that powder and
<v Speaker 2>we save it up a lot, So now it really
<v Speaker 2>comes down to how are you going to use these
<v Speaker 2>to really benefit your plants. So you know, think before
<v Speaker 2>when you would crush those eggshells up and you might
<v Speaker 2>put an eggshell or two, and again we talked to it,
<v Speaker 2>it's not going to get to those plants this year.
<v Speaker 2>That's really not going to help the soil. But when
<v Speaker 2>you're taking a tea spoon or two of eggshell powder
<v Speaker 2>and you're putting it in that planting hole of a
<v Speaker 2>tomato or a marigold or a pepper plant, days are
<v Speaker 2>all going to almost within you know, days, absorb into
<v Speaker 2>that soil, the watering comes in, it starts to leach
<v Speaker 2>those nutrients right into your plants and really provides them
<v Speaker 2>of the calcium boost they need. Right.
<v Speaker 3>That calcium is going to last pretty much all growing
<v Speaker 3>season once you put it into the planting hole.
<v Speaker 2>Yeah, it is. And so how much should you use?
<v Speaker 2>I mean, this is the great question. So here's here's
<v Speaker 2>our roll of thumb and what We've been doing this
<v Speaker 2>for a while now with a lot of success. And
<v Speaker 2>so what's the old saying, When something works, you know,
<v Speaker 2>don't break it.
<v Speaker 3>Right, right exactly?
<v Speaker 2>So for eggshell powder, for our vegetable plants, tomatoes and peppers, cucumbers, zucchini,
<v Speaker 2>you name it, we put i'd say two to three
<v Speaker 2>tablespoons in every planting hole.
<v Speaker 3>Yeah. I think for the larger vegetable plants or the
<v Speaker 3>larger flowers, I think, you know, two to three tablespoons
<v Speaker 3>is more than plenty smaller plants, pansies you know you
<v Speaker 3>can put Oh yeah, you can put a.
<v Speaker 2>Little bit in. You're absolutely right. And again we talk
<v Speaker 2>about this. Why is this called the simple garden life?
<v Speaker 2>Because sometimes people make gardenings so difficult and so frustrating
<v Speaker 2>for themselves that it's not fun. And you have to
<v Speaker 2>make it fun. So for us, when we say two
<v Speaker 2>to three, we really mean that. It's not like if
<v Speaker 2>you put three tablespoons, your tomato plants are going to
<v Speaker 2>produce six point eight pounds of tomatoes and two tablespoons
<v Speaker 2>are going to have some blossom rot. It's not the
<v Speaker 2>way it works. This helps your soil over time, but
<v Speaker 2>grind him. It helps your soil much more immediately in
<v Speaker 2>the same growing season and can help your plants just
<v Speaker 2>develop far better with far less health issues. And again
<v Speaker 2>it's not just beyond the blossom. Calcium also plays a huge,
<v Speaker 2>huge role in that initial plant health for all of
<v Speaker 2>those annual plants we're talking.
<v Speaker 3>About, right, And it also helps with soil to absorb
<v Speaker 3>when your plants are having difficulty absorbing calcium because they
<v Speaker 3>are too wet, Giving that calcium boost helps your plants tremendously.
<v Speaker 2>Yeah, and we talk about planting holes. That's where people
<v Speaker 2>really need to concentrate their efforts. So many people get
<v Speaker 2>composts and worm castings and all the great things that
<v Speaker 2>you really do need, and they spread them all over
<v Speaker 2>their garden and tilimin or they think that's going all over.
<v Speaker 2>Concentrate those things, just like this ey powder, right in
<v Speaker 2>your planting holes, because that's where the roots of your
<v Speaker 2>plants are going to grow and they're going to take
<v Speaker 2>them that season. So when you know in our planting
<v Speaker 2>holes we put composts, we put coffee grounds, we put eggshells,
<v Speaker 2>we put worm castings, those are all in the planting
<v Speaker 2>hole because they're helping that plant that year right where
<v Speaker 2>it needs it the most.
<v Speaker 3>Right at the roots. But also use the eggshell powder
<v Speaker 3>on top of our soil after we plant.
<v Speaker 2>And why is that? It's a It's a great cause
<v Speaker 2>because what happens when it rains.
<v Speaker 3>Right, it's a slow release calcium boost to your plants.
<v Speaker 2>Yes, every time it rains or you water, that calcium
<v Speaker 2>is leaching down into that soil and helping out. And
<v Speaker 2>again we might put a tea spoon around the top
<v Speaker 2>of each plant. And if we have enough, we sometimes
<v Speaker 2>you know, it depends how many eggs I've had.
<v Speaker 3>That you eat a lot of eggs, we're good.
<v Speaker 2>So again, just take it like that. It just realized
<v Speaker 2>that when you use the powder versus bits and pieces,
<v Speaker 2>you're going to get a lot more. Now, I want
<v Speaker 2>to say something before we go. There still is a
<v Speaker 2>use for the bits and pieces. And this is what
<v Speaker 2>we have talked about. We're like, wait a minute, wait
<v Speaker 2>a minute. You're said, grind, grind, grind. But if you
<v Speaker 2>have a lot of problems with slugs broken eggshells around
<v Speaker 2>the rims of your plants. When I say the rims,
<v Speaker 2>you plant on your top and you circle a little
<v Speaker 2>maybe three inches out and you crush up some eggshells
<v Speaker 2>around there. That can actually help prevent slug damage because
<v Speaker 2>with the slugs cannot crawl across that without getting cut,
<v Speaker 2>which drives their skin out and they can't make it
<v Speaker 2>to your plant. So there still was a use for
<v Speaker 2>some crushed eggshells. And yes they'll break down eventually and
<v Speaker 2>help put some soil in there as well, but for
<v Speaker 2>the majority of the use of it, you want to
<v Speaker 2>use that ground.
<v Speaker 3>Powder, right And for those that don't eat eggs, there's
<v Speaker 3>some people that candied eggs, like me because I have
<v Speaker 3>an egg allergy, or people that just don't choose eat eggs,
<v Speaker 3>you can still utilize eggs in your eggshells in your garden.
<v Speaker 3>For many years, we would go to our local diner,
<v Speaker 3>breakfast diner and ask them to save their eggshells for us.
<v Speaker 3>And we would go there every Saturday with our five
<v Speaker 3>gallon bucket and switch it out and they would give
<v Speaker 3>us their eggs shells from their breakfast and we would
<v Speaker 3>just replace them with a clean bucket.
<v Speaker 2>I'm pretty sure they gave us their egg shells, their potato, peelium.
<v Speaker 3>And coffee gross.
<v Speaker 2>All their coffee we did, and all we had to
<v Speaker 2>do was take them a five gallon bucket every Saturday
<v Speaker 2>and we would go in for breakfast and they would
<v Speaker 2>hand us a full one. We would like we, you know,
<v Speaker 2>had won the lottery. Taking it home. We got a
<v Speaker 2>lot of strange looks though, yeah we did, but you
<v Speaker 2>know what it was. It was great because you were
<v Speaker 2>saving that from going to a landfill and it was
<v Speaker 2>really helping. That was until we got our own chickens
<v Speaker 2>and could start doing our own things. But Mary's right,
<v Speaker 2>there's always a way to find these these soil amendments
<v Speaker 2>that that don't have to be so costly. You know,
<v Speaker 2>you can make your own compost, you can go out
<v Speaker 2>and find coffee grounds, you can go out and find
<v Speaker 2>eggshells even if you don't have them. But the important
<v Speaker 2>thing is, and what we hope you take home today
<v Speaker 2>as we wrap this up, is that egg shells can
<v Speaker 2>be so beneficial to helping your soil and helping your plants,
<v Speaker 2>but it's best to always grind them down as much
<v Speaker 2>as possible and leave you with this this last thing. Yes,
<v Speaker 2>if you're asking and you're thinking, well, wait a minute,
<v Speaker 2>I put eggshells in my compost, ben, Yeah, if you
<v Speaker 2>if you grind them up, they're going to break down
<v Speaker 2>that much faster, and that calcium is going to.
<v Speaker 3>Leach into there as well one percent, and they're beneficial
<v Speaker 3>in all areas of gardening.
<v Speaker 2>All right, so I think we've wrapped up our second
<v Speaker 2>podcast of the season. We're really enjoying getting back into
<v Speaker 2>this and we hope you are too. Again. You can
<v Speaker 2>always email us at the farm at owgarden dot com
<v Speaker 2>with your questions. We're always happy to answer. We try
<v Speaker 2>to get back with everybody within at least a day
<v Speaker 2>or two. We enjoy it and we get a lot
<v Speaker 2>of emails from it, and you can follow us at
<v Speaker 2>simplegardenlife dot com. I'm Jim Competti for Marycompetti and Mary.
<v Speaker 2>What do we always say at the end?
<v Speaker 3>Happy gardening? Everyone?
<v Speaker 2>That's right, Happy gardening. We'll see you next time. We
<v Speaker 2>hope you've enjoyed this episode. Subscribe to the Simple Garden
<v Speaker 2>podcast on iTunes, Apple Podcasts, Spotify, or most of your
<v Speaker 2>favorite podcast apps. You can also head over to simplegardenlife
<v Speaker 2>dot com where you can listen and read all of
<v Speaker 2>the show notes to every episode and.
<v Speaker 3>If you have any questions, any ideas for show topics,
<v Speaker 3>or if you want to share your favorite garden tip,
<v Speaker 3>email us at the Farm at owgarden dot com.
<v Speaker 2>Until next time, Thanks everyone,

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