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To plant walnut seedlings, you need to start with a good seed, also known as a walnut, and give it the right conditions to sprout and grow.
Whether you’re planting a walnut seedling you bought from a nursery or starting one from a nut you found, the basic steps for how to plant walnut seedlings are pretty straightforward.
The key is understanding what walnut seedlings need: deep soil, good drainage, plenty of sun, and patience, because walnuts are in it for the long haul.
In this post, we’ll walk through how to plant walnut seedlings step by step, from choosing the right spot to caring for your young tree as it settles in.
Let’s dig in.
How to Plant Walnut Seedlings: The Basics
Learning how to plant walnut seedlings starts with understanding what you’re working with.
Walnut seedlings are young trees, usually one to two years old, that are ready to be moved into their permanent spot.
Here’s what matters most when you plant walnut seedlings:
1. Choose the Right Location
When you plant walnut seedlings, location is everything, because these trees don’t like being moved once they’re established.
Pick a spot with full sun, at least six to eight hours a day, and deep, well-draining soil.
Also, keep in mind that walnut roots release a compound called juglone, which can harm certain plants nearby, so give your seedling plenty of space.
2. Get the Timing Right
The best time to plant walnut seedlings is in early spring or late fall, when the tree is dormant.
Planting during dormancy gives the roots time to settle in before the tree puts energy into leaves.
If you plant walnut seedlings in the heat of summer, they’ll struggle, so avoid that if you can.
3. Prepare the Planting Hole
Dig a hole that’s twice as wide as the root ball but no deeper than the seedling was growing before.
When you plant walnut seedlings too deep, the trunk can rot, so keep the root flare right at soil level.
Loosen the soil around the hole so the roots can spread easily.
Step-by-Step Guide to Plant Walnut Seedlings
Now that you know the basics, here’s how to plant walnut seedlings from start to finish.
1. Soak the Roots Before Planting
If your seedling came bare-root, soak the roots in water for a few hours before you plant it.
This rehydrates the roots and gives your walnut seedling a better start.
2. Place the Seedling in the Hole
Set the seedling in the hole and spread the roots out gently.
Make sure the graft union, if there is one, sits a couple of inches above the soil line.
If you plant walnut seedlings with the graft buried, the tree may fail to thrive.
3. Backfill and Tamp the Soil
Fill the hole with the soil you removed, breaking up any clumps as you go.
Tamp the soil down lightly to remove air pockets, but don’t pack it so hard that the roots can’t breathe.
4. Water Deeply
After you plant walnut seedlings, give them a slow, deep watering.
This settles the soil around the roots and helps the seedling recover from the shock of being planted.
Keep the soil moist, not soggy, for the first few weeks.
5. Mulch Around the Base
Add a layer of mulch around the seedling, but keep it a few inches away from the trunk.
Mulch helps retain moisture and keeps weeds down, which is especially helpful when you plant walnut seedlings in a new area.
How to Plant Walnut Seedlings from Seed
If you want to know how to plant walnut seedlings from scratch, you can also start with the nut itself.
1. Stratify the Nuts
Walnut seeds need cold stratification, which means a period of cold, moist conditions to break dormancy.
You can do this by placing the nuts in damp sand in the fridge for three to four months.
2. Plant the Sprouted Nuts
Once the nuts sprout, plant them in pots or directly in the ground, about two inches deep.
This method takes longer, but it’s a rewarding way to plant walnut seedlings if you’re patient.
3. Care for the Young Seedlings
Keep the soil moist and protect the seedlings from squirrels and birds, which love to dig up freshly planted walnuts.
When you plant walnut seedlings this way, give them a year or two in a nursery bed before moving them to their final spot.
So, How Do You Plant Walnut Seedlings?
To plant walnut seedlings, start with the right location, the right timing, and a hole that’s wide but not too deep.
Soak the roots, set the seedling at the right depth, backfill gently, water deeply, and mulch around the base.
Whether you plant walnut seedlings from a nursery or grow them from seed, the key is giving them space, sun, and consistent moisture.
Do that, and your walnut seedling will reward you with shade, nuts, and years of growth.