In Spring, I will be planting 3 Lemony Lace Elderberries. I want to know what a good companion is for them. I am really looking for a darker color plant, bush, shrub. These are being planted in a new garden retaining wall garden bed. Thank you.
You do have a few companions that the included article will mention, but I would make sure to plant these when you are planting your elderberry. They will not want to be disturbed after planting.
https://www.gardeningknowhow.com/edible/fruits/elderberry/elderberry-plant-companions.htm
I planted 2 Black lace elderberry bushes last fall. Each were 12" tall. This year one grew 5' and the other 3'-5". All was well until 2 weeks ago when leaves started wilting. We had rain last week and 75% of the branches were laying on the ground the next day. They broke off where the branch meets the main stem. I checked for insects and found none. I also cut open several branches and found no borers. Can anyone explain this strange problem? We have had quite a few hot days with not enough rain, but I watered the base of the plants every 3 days. I live in north NJ.
They were very thin and spindly. Has the soil been enriched with compost? They prefer moist soil. Try watering less often but more deeply. You might consider a soil test to see if something is amiss.
The first couple of years they should be left to grow. After that, they do best with yearly pruning.
https://www.gardeningknowhow.com/edible/fruits/elderberry/pruning-an-elderberry.htm
https://extension.unh.edu/blog/2020/08/what-best-way-grow-elderberries
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
These are domestic. I water them regularly - every other day.
You could cut back on the watering. Instead of frequent watering, water them less often, but deeply. Here are more tips:
https://www.gardeningknowhow.com/edible/fruits/elderberry/elderberry-bush-varieties.htm
https://www.gardeningknowhow.com/edible/fruits/elderberry/planting-elderberry.htm