Before planting a walnut seed to germinate, break off the outer shell until the fresh, green seed is exposed. Keep the seed moist, and wait about a month before it germinates, with gardening help from an urban horticulturist in this free video on plant seeds.
Hi, I'm Stan DeFreitas, Mr. Green Thumb, for askmrgreenthumb.com. When you think about growing walnuts, you can raise the large tree from a seed. Now, most people probably go to the nursery and go ahead and get an established tree, but if you're so inclined, get that large fresh seed and let it dry out, kind of break the outer coating off, and you're going to kind of scarify the seed. Lightly go over it to help break the outer coating. The inner green seed when it's viable, will germinate probably in about a month. Put it into a good peaty organic soil. Any good potting soil should do. Make sure that it doesn't dry out. That seed is big but it also needs a good deal of moisture. Also, of course, with being a larger seed, you need to make sure the walnuts planted probably an inch, maybe an inch and a half deep. Don't plant it right on the surface. Plant a bunch of them. If you find fresh walnuts, that's where you want to get your seed. You don't want to get something that's been dried out in the bag that's left over from Christmas. It's not going to do very well. Try to get viable seed, live seed and it'll pay to do a little bit of research to find those seeds. You can find them in some of the catalogs. Also, the potting soil, you can get at almost any nursery, almost any garden supply store and, of course, the watering can and watering it in; well that's easy to do. Even though it's a large seed and it becomes a large tree, the tree will probably get to be fifty, sixty feet tall and it will also give you a bodacious bunch of walnuts. Fun to grow in much of north and central America; you're not going to see them too much in the deep south, but you will see them probably northern Florida, north. For growing walnuts, I'm Stan DeFreitas, Mr. Green Thumb.
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