Can the 'Endless Summer' hydrangea be pruned in December in Arkansas, since it blooms on new growth?
Yes, that would be fine.
I have an Endless Summer hydrangea bush that I did not trim back last fall. Should I cut it back now? I see there are green leaves surfacing from the ground.
When should we prune our Endless Summer bushes? I understand that they grow on old and new wood, but don't quite understand what that means. We have not touched them and they are leafing out, but look like the old wood needs to be cut off or will leaves form there as well?
Here is an article that you may find helpful: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/prune-hydrangea-bushes-hydrangea-pruning-instructions.htm
I had hydrangea plants planted in my garden two years ago. The area gets part sun to part shade. The plants are supposed to be Endless Summer hydrangea. They bloomed beautifully the first summer, huge pink/purple flowers. I cut the dying flowers off in the fall and dried them. The next summer the plants only produced leaves. I didn't cut the plants down at all last fall. This summer there is only one tiny bloom and I have not cut them since the first fall I had the plants. I have been adding holly berry fertilizer every spring and fall since I had the plants installed. Do you know what I can do to get them to bloom again? -
Several things can cause this. Here is an article that you may find helpful: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/hydrangea-not-blooming.htm
Are leaves an ok mulch for my 'Endless Summer' hydrangea in Zone 4-5?
Yes, leaves make an excellent mulch for helping to protect plants over the winter.
An early frost darkened and curled leaves on my Hydrangeas (Endless Summer). The plants are budding but look unhealthy. Will they renew their healthy state or must they be replaced?
The shrub should recover on its own, though you can cut away the unhealthy foliage to improve its overall appearance.
Twice a year I use Holly Tone fertilizer around my Endless Summer hydrangea plants. They are showing fewer blooms every year (they've been in the ground 4 years). I have not pruned except to remove completely dead branches. My husband made wood framed tepees to cover each on over the winter (we live in Manlius, NY). I have heard there is another fertilizer that will encourage blooming, but can't remember what it was. Can you please help?
You may be thinking of phosphorus. If there is a lack of phosphorus in the soil, plants will have little to no blooms. You can either use a phosphorus rich fertilizer or add some bone meal to the soil. These articles may help as well: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/hydrangea-not-blooming.htm, https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/phosphorus-plant-growth.htm