What are in apple seeds

How to Grow Apple Trees From Seed

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Apple seeds are easy to grow at home with the proper preparation, and seedlings are often more vigorous than their grafted nursery counterparts. Give an apple tree seedling 3-4 years and it’ll catch up to and pass a potted transplant in size. From there, you have a tree that may bear for centuries.

The main reason apples aren’t grown from seed is that they don’t “come true to seed.” Just like humans, the offspring may have some resemblance to their parents, but with their own flavor and habits. Humans tend to want predictability, and for that reason, apple trees are cloned by grafting rather than starting from seed.

The thing is…all the tastiest apple varieties were a seedling at some point in history. Planting an apple from seed is like playing the lottery, and since you’re likely going to compost that apple core anyway, you’ve got nothing to lose.

A few hundred years ago settlers carried with them apple seeds and started seedling orchards all over the Northeast, and those same orchards became the parents of many of the heirloom varieties I now treasure. Those that were less tasty eaten out of hand went into hard cider, which requires a certain percentage of high tannin or high acid apples to brew properly.

One year we bought more than 30 apple varieties from a local heirloom apple orchard and did a big apple taste test. Since all the trees were in an heirloom orchard, there’s no telling who the second parent tree was…but it’s less likely that the father tree was a wild crab apple and more likely that it was another tasty heirloom. This improves the chances that any given seed will bear offspring with good characteristics.

Since a seedling tree will have some of the characteristics of its parents, we chose the seeds from our very favorite varieties to plant. There’s a good chance many of them will be best suited for hard cider or to please the deer as windfalls, but even then they’ll still feed the bees with abundant blossoms and nectar in the spring. And at the very least they’ll help pollinate our other tastier trees, so it’s a win either way.

Preparing Apple Seeds for Planting

Apple seeds need cold stratification to break dormancy. The seeds need to be kept under moist refrigeration for at least 6 weeks before they’re planted. Place apple seeds in a moist paper towel, and then put that paper towel inside a plastic bag, leaving it open just a crack for air exchange. Store it in the back of the refrigerator, checking on the towel every week or so to make sure it’s moist.

At the end of 6 weeks, some of the seeds may have started to sprout already. That’s a good thing since apple seeds have a very low germination rate. Some sources say as low as 30%, though I’d guess ours were more like 60% at least, so clearly, it’s variable.

If you buy local apples late in the season, months after harvest, they’ve already been kept under refrigeration for many months. It’s a good idea to cold stratify those seeds in a moist paper towel too because extra stratification won’t hurt them, but not enough cold hours means no apple seedlings. When you cut long stored local apples open, there’s a chance that some of the seeds may have already started to germinate inside the apple…

An apple seed that had already started to germinate inside an apple from cold storage.

How to Plant Apple Seeds

After a minimum of 6 weeks in a moist paper towel in the refrigerator, you can plant apple seeds just as you would any other seed. They can be direct seeded outdoors if it’s after last spring frost and the soil can be worked. Since germination rates are low, and predation from squirrels, mice, and voles can be an issue early on, we generally sprout them in pots.

I place about a dozen seeds in a recycled one-gallon nursery pot along with a bit of seed starting potting mix. Keep the soil warm and moist, as you would any other spring planted seed start (ie. tomatoes).

How Long Do Apple Seeds Take to Germinate?

After 6 weeks of cold stratification, apple seeds actually germinate fairly quickly. Many of the seeds will already be germinating on the paper towel in your refrigerator, and those will emerge from the soil quickest after planting. Assuming soil temperatures are fairly warm (about 75 degrees F) the seeds should emerge from the soil in 1-2 weeks.

From there, we tend the apple seedlings in pots until the young trees are at least 4-6 inches tall. That means we’re less likely to lose them where they’re planted, but staking them is also a great idea because one casual step can mean the end of a young tree at this stage.

Transplanting Apple Seedlings

If you’d like to get them into the ground sooner rather than later, just wait until nighttime temperatures are consistently above 50 degrees in the spring (or early summer here in the north country).

Once the apple seedlings are in the ground, they’ll begin the work of growing into a full-sized tree. Since they’re not grafted on dwarfing rootstock that handicaps them and limits their nutrients, seedling apples will grow strong and healthy, but also large. Good pruning can keep apple trees smaller, but full-sized apples should still be planted at least 20 feet apart.

How Long Does It Take Apple Seedlings to Bear Fruit?

Surprisingly, not really any longer than an expensive grafted nursery tree. Nursery bought apple trees generally bear about 8 years after planting. They may have been in the pot for some time, which caused them to become a bit root-bound and stunted. Even in the best of cases, large 6” tall nursery trees don’t take transplanting well and it takes them some time to recover and begin to grow vigorously again.

After three years in the dirt, our apple seedlings are now actually taller than our grafted nursery trees. We’re expecting them to come to bare alongside our other standard apple varieties in about 5 more years, but time will tell.

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How to Grow An Apple Tree From Seed (Easy Tutorial)

Published on January 19, 2021 Last updated November 18, 2021 ♛ By Melissa J. Will

Use this simple tutorial to grow an apple tree using the seeds found in fruit from the grocery store. It’s an excellent beginner project for anyone wanting to try simple plant propagation. This same method works for pears as well.

Want to turn other food into plants? See How to Grow Avocado From Seed.

Grow Your Own Apple Tree

Of all the ways we can encourage a love of plants, nature, and gardening, it seems that starting something quite prolific from seed—like an oak tree from an acorn or an apple tree from seed—are sure ways to create a lifelong interest in growing. And how cool is it that you take the seeds from fruit you’re eating and grow them into fruit-bearing trees?

Contents

Before You Start

Before we dive into the step-by-step instructions there are a few things to know.

• For seeds to be viable (able to grow), they need to be mature. An apple you buy at the grocery store is very likely mature but an apple picked from a tree part way through the growing season will not have fully-formed seeds. So start with mature, ripe fruit.

• Apple seeds, along with other fruit seeds including pear, peach, and cherry, require stratification (cold, damp conditions) to prepare for germination. The amount of time required to stratify varies depending on the variety. It’s generally between 60 and 90 days. The instructions (below) show you how to mimic stratification.

• Not all apple seeds will sprout. Even if you do everything right, some types never sprout, and for those that do, only half may germinate. It varies a lot. So, increase your odds by starting a bunch, preferably from several different types of apples.

• You won’t get McIntosh apples from McIntosh seeds. Or any other variety (with a few exceptions*). If your apple seeds do grow to become fruit-bearing trees, the apples produced will not be same as the ones you started with. Most apple trees require cross-pollination from another apple tree so any apples produced will have genes from both (the tree you grew and the pollinator tree) and, similarly, no two seeds will produce genetically-identical trees. In other words: every seed has a different combination of genes. That’s why plant breeders who want specific varieties do not grow their trees from seed but instead propagate vegetatively, taking stems and grafting them onto other established rootstock, to grow genetically identical apples. *Antonovka seeds are one example of apple seeds that reproduce true to parent.

Personally, I love experimenting with seed starting, watching things grow, and propagating plants from food scraps is a favorite rabbit hole to explore.

And, what a wonderful thing for a child (or anyone) to grow something from a simple seed and nurture it for years to come.

How to Sprout Apple Seeds

This is how to germinate apple seeds. You can follow the same steps to sprout pear seeds as well.

Get Seeds Ready

Some apples have many seeds, some have few, others have none or just little white cases where you’d expect to find seeds. Pay attention to store bought apples like McIntosh, Delicious, Granny Smith, Sparta, Fuji, Gala, and so on, and, as you eat them, look for fully formed (dark brown) seeds.

It’s best to start quite a few (10-20) from different types of apples to increase your odds. If you do, be sure to keep each type separate and labelled so you know what worked.

Start with a ripe apple (one you would eat) to ensure the seeds inside are mature. Cut around the core to avoid damaging any of the seeds with your knife.

I like to take clear, close up pictures at this point so I have something to compare with later on.

Ever Find Sprouted Seeds In Your Apple?

When fruits become over-ripe, the hormones that control seed dormancy decline and the seeds within the fruit can actually start sprouting. This is called vivipary (“live birth”). If you ever find germinated seeds in your apple, sow them! And thank them for making propagation so easy.

Sand Seed Coats

Next, to help the process along, you can very gently soften the seed coat. I do this by folding a small piece of sandpaper with the right (rough) sides together. Insert one seed at a time and gently sand off a little bit of the coat by rolling everything between your fingers. Easy does it: you don’t want to expose the embryo inside.

Soak in Moist Paper Towel

Once sanded, spread your seeds out on a moist (not dry, not soaking wet) paper towel (or a dish cloth), fold it up, and place everything in a food storage container or plastic food bag.

You may see other methods where the seeds are placed in moist potting mix instead of paper towel. I prefer paper towel because it makes it easy to check on the seeds and see any sign of sprouting without having to dig them out and rinse them off.

Chill in Fridge

Add a tag or write on tape or with waterproof marker noting the seed name (McIntosh, Delicious, Granny Smith…) and the date.

Place in refrigerator and set a reminder on your phone to check on the seeds weekly.

Most fridges run around 35 to 38°F (1.7 to 3.3°C) and apple seeds do best around 40°F (4.4°C). With the insulation provided by the container and paper towel, our seeds in the fridge will do fine.

How long does it take for apple seeds to germinate?

Depending on the variety, they may need 60 to 90 days of moist and cold conditions to germinate. Never allow the paper towel to dry out or become waterlogged: just add moisture as needed.

When they have sprouted, they are ready for sowing.

If they haven’t sprouted after 90 days in the fridge, try setting the container on your countertop at room temperature and give them another few weeks. I’ve had some sprout this late, right when I was going to give up.

Planting Sprouted Apple Seeds

I’ve sprouted my apple seeds, now what?

While you could plant your apple tree seedling right in the garden (in spring or summer), it will be much easier to protect and care for it if you grow it in a container for as long as possible.

Start with a 4 to 6-inch wide (and deep) plastic flower pot with drainage holes and use organic potting mix.

This larger pot (in the photo, below) has seven apple tree seedlings. Once they get a bit bigger (about 6 to 8-inches tall), they should be transplanted into their own containers to avoid getting the roots tangled.

Frequently-Asked Questions

When Will My Apple Tree Produce Fruit?

With optimum growing conditions, it may take 7 to 10 years for the tree to flower and fruit—if it will do this at all. Some apple trees grown from seed will never fruit.

We grow from seed for fun but buy grafted apple trees if we want a tree that will provide a specific type of apple.

The whole topic of pollination is worth researching if you do get this far. If you want a chance of pollination (leading to fruit), there will need to be other apple trees nearby for cross-pollination.

Also, some types of apple tree including Jonagold and Gravenstein have sterile pollen and require pollen from two other trees for fertilization to take place. These are called ‘triploids’. So much to know!

Apple Tree Pollinators
Honey bees (Apis mellifera) are the most common pollinators for apple trees, along with orchard mason bees (Osmia lignaria), and (in much smaller numbers) bumblebee queens (Bombus genus). You may also notice that each variety of apple tree has its own time to flower from late winter to late spring. Fruit trees that flower at the same time are called ‘pollinator partners’.

Are Apple Seeds Toxic?

Apple seeds do contain cyanogenic glycoside, a cyanide-based compound. But it would take a very large dose to harm someone. That’s why it’s not an issue when we accidentally swallow seeds when eating apples. There are no cases of apple seed poisoning on record.

Can I Grow An Apple Tree Indoors?

It would be fun but no, not under normal household conditions. These are cold-hardy trees needing four seasons to flourish.

More Tutorials

I hope you’ll give this a try and be sure to sign up for the free Empress of Dirt Newsletter for new growing tips and creative garden ideas.

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