September 2, 2011
September 3, 2011
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We want to plant shrubs and other plants along the foundation of our house. The front of the house faces south and has shade all day due to an oak tree, a giant cottonwood and a black walnut tree that is 3′ from the corner of the house. The west side of the house is mostly shade and the walnut is at the southwest corner of the house. We tore up all the landscaping 10 years ago and don’t remember what was planted there. We live in St. Paul, MN.
I believe you can plant hydrangea, forsythia and hibiscus near black walnut. Many trees, though they may reach over 5 ft., are compatible as well: arborvitae, flowering dogwood and Japanese maple are a few. This article may offer additional suggestions too: https://www.gardeningknowhow.com/edible/nut-trees/black-walnut/black-walnut-compatible-plants.htm
Black walnuts are poisonous to most plants, so it is possible that the soil near the tree and surrounding area has some toxicity which may be affecting your hydrangeas. You may need to consider moving your hydrangeas further away if possible or grow them in raised beds or containers. This article will also help: https://www.gardeningknowhow.com/edible/nut-trees/black-walnut/black-walnut-compatible-plants.htm
Some branches leafed out and others did not, about half of the tree did not leaf. Tree was very healthy in the fall and not sure if it will come back now. Any answers?
There are many reasons this would happen. This article will go over what it could be and will be helpful: