Learn How to Grow Cherry Trees from Seeds

Understanding Cherry Tree Seeds and Their Viability

Growing cherry trees from seeds is a rewarding gardening project that starts with understanding what you're working with. Cherry seeds come from the pit of the fruit and contain an embryo that can develop into a mature tree. However, not all cherry seeds will sprout successfully. The viability of a seed—its ability to grow—depends on several factors including the seed's age, how it was stored, and what variety of cherry tree it came from.

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Cherry seeds require what botanists call "stratification," a cold period that mimics winter conditions. Without this cold exposure, most cherry seeds will remain dormant and won't germinate. In nature, seeds fall to the ground in autumn, experience freezing temperatures over winter, and then sprout in spring. You'll need to recreate this process indoors if you want your seeds to grow.

Different cherry varieties have different germination rates. Sweet cherry seeds, which come from trees like Bing or Rainier cherries, typically have germination rates between 50-70% when properly treated. Sour cherry seeds from varieties like Montmorency may have slightly lower rates. This means that if you start with 10 seeds, you might reasonably expect 5-7 to sprout successfully.

Seeds should be collected from ripe cherries—ideally from fruit that has fully ripened on the tree. The seed inside must be fully mature for the best chance of germination. If you're using store-bought cherries, keep in mind that some commercial varieties are bred for fruit production rather than seed viability, so germination rates may be lower.

Practical Takeaway: Collect seeds from fully ripe cherries during peak harvest season in your area (typically June through August in North America). Store them in a cool, dry place immediately after extraction, and understand that you may need 10-15 seeds to reliably produce 5-7 seedlings.

Extracting and Cleaning Cherry Seeds Properly

The process of extracting seeds from cherries requires care to avoid damaging the seed inside. Start by choosing fully ripe cherries from a healthy tree. Gently squeeze or cut the cherry to open it and remove the pit. You'll notice the seed is enclosed in a hard shell—this is the protective layer that keeps the embryo safe.

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Once extracted, the seed will have cherry flesh and juice clinging to it. This material needs to be removed because it can introduce fungal growth or rot during storage and stratification. Rinse the seeds under cool running water, rubbing gently with your fingers to remove the fruit flesh. You can also soak seeds in water for 24 hours and then rub away any remaining pulp. Pat them dry with a soft cloth or paper towel.

After cleaning, inspect your seeds. Viable seeds are typically brown or tan in color and feel firm when gently squeezed. Discard any seeds that are cracked, discolored, or feel soft, as these are likely non-viable. Some seeds may have small holes or cracks from insects—these should also be discarded as they won't develop properly.

A helpful test for seed viability is the float test. Place your cleaned seeds in a bowl of water. Viable seeds tend to sink, while non-viable seeds often float. However, this test isn't 100% reliable, so don't discard all floating seeds—some may still germinate. Aim to have seeds completely dry before moving to the stratification stage.

Practical Takeaway: Clean seeds thoroughly under running water to remove all fruit pulp, allow them to air-dry completely, and discard any that appear cracked or damaged. This preparation stage takes only a few minutes but significantly improves your germination success rate.

The Cold Stratification Process Explained

Stratification is the most critical step in growing cherry trees from seeds. This process exposes seeds to cold temperatures that break their dormancy and prepare them for germination. Most cherry varieties require between 8-16 weeks of cold stratification. Sweet cherries typically need around 12-16 weeks, while some sour cherry varieties may need only 8-12 weeks.

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The most common stratification method uses the refrigerator. Start by obtaining some moist sand, peat moss, or a seed-starting mix. These materials should be damp but not soggy—similar to the moisture level of a wrung-out sponge. Mix your clean, dry cherry seeds with this moist medium in a ratio of about one part seeds to three parts medium. This prevents seeds from touching each other directly, which can cause them to stick together.

Place the seed-medium mixture in a plastic bag or container with drainage holes and seal it loosely. The container needs some air circulation but should retain moisture. Put this in your refrigerator at temperatures between 32-41°F (0-5°C). Check the mixture every 2-3 weeks. If it has dried out, lightly mist it with water. If it appears overly wet or shows mold growth, open the bag and allow it to dry slightly, then reseal it.

You can track when seeds are ready to plant by watching for the emergence of tiny white root tips. Once you see this happening on several seeds, usually after 10-14 weeks, your seeds are ready for planting. Some seeds will germinate while still in the refrigerator—this is normal and fine. You don't need to wait for all seeds to show roots; you can begin planting when the first ones are ready.

Practical Takeaway: Prepare your stratification setup in late fall if you want spring plantings, or start anytime you have access to fresh seeds. Plan for 12-16 weeks of cold storage before you'll be ready to plant seeds in soil. Setting a phone reminder every 3 weeks helps you remember to check moisture levels.

Planting Cherry Seeds and Initial Care

Once your seeds have completed cold stratification and are showing root tips, it's time to plant them in soil. Use a well-draining seed-starting mix or a combination of equal parts potting soil and perlite. This mix allows water to drain away while providing necessary nutrients for young seedlings. Avoid using garden soil from outdoors, as it can compact in containers and harbor disease organisms.

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Fill seed-starting pots or trays with your prepared soil mix. Pots should be at least 4 inches deep and have drainage holes in the bottom. Moisten the soil thoroughly before planting. Make a small hole about 1 inch deep in the soil and gently place one stratified seed into it. Cover it lightly with soil and gently press down. You can plant multiple seeds in the same pot, spacing them about 2 inches apart, though seedlings will eventually need to be separated.

After planting, place your pots in a warm location with temperatures around 65-75°F (18-24°C). Seedlings should receive bright light—a south-facing window works well, or you can use grow lights positioned 3-4 inches above the soil. Leave lights on for about 14-16 hours daily. Keep the soil consistently moist but not waterlogged; this usually means watering every 2-3 days depending on your climate.

Cherry seedlings typically emerge within 2-4 weeks of planting. They'll first show two seed leaves called cotyledons. As they grow, true leaves will develop. The first true leaves will look more like typical cherry tree leaves. At this stage, seedlings are becoming more robust and require less frequent watering—allow the top of the soil to dry slightly between waterings.

Practical Takeaway: Use well-draining seed-starting mix, keep soil consistently moist during germination, and provide at least 14 hours of bright light daily. Once true leaves appear, reduce watering frequency and prepare to transplant seedlings into larger containers within 6-8 weeks.

Transplanting and Growing Healthy Seedlings

As cherry seedlings grow, their roots will eventually fill the starter pot or tray. This usually happens 6-8 weeks after the seeds sprout. Signs that transplanting is needed include roots growing through drainage holes, stunted growth, or the soil drying out very quickly after watering. Transplanting gives seedlings more space and nutrients to develop strong root systems.

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When transplanting, use pots that are 2-4 inches larger in