I planted hydrangea bushes several years ago. The first couple of years the blooms were huge and beautiful. Lately the blooms seem to be getting smaller and more pale each year. What is causing this and how do I correct the problem?
It may be a lack of nutrients, particularly phosphorous. I would give the plant some fertilizer with an extra boost of phosphorous. Bone meal is one way to add phosphorous.
My husband sprayed weed killer all over our lawn over a month ago and it seems to have immediately damaged many of my plants, such as my newly sprouting hydrangeas and peonies. They were just beginning to sprout and after the weed killer hit them, the baby foliage shriveled up and just stopped growing. It didn't turn brown or fall off, just seems to be stunted and twisted up. I'm wondering if I should go ahead and prune it back to encourage new growth or just leave it be and let nature take its course. Do you have any answers for me?
The hydrangea, you can prune back and it might put out new growth, but I think the peonies will not do so. So leave the peonies along and hopefully they will recover. In the future, if this happens again, water the foliage of the plants as soon as you realize what has happened to wash off as much of the weed killer as possible.
I planted my lavender coloured hydrangea but it withered after 2 days. Why? It was indoors cause the weather was cold. The moment the weather was good, I did plant it carefully not hurting roots.
It sounds like the plant is now in transplant shock. This article will help:
https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm
I planted young plants about a month ago. They are blooming but the leaves are turning brown. First on the edges and then it works up the leaf toward the stem. Am I watering enough or too much? What do I do? The plant looks healthy but unsightly.
You can trim off the brown leaves. They may simply be going through some transplant shock from recent planting. This article may offer additional suggestions that you can try: https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm
These two plants have no blooms on them. They start out great looking then get the chewed leaf look.
It could be either black spot or sooty mold. Both are treatable and in most cases, not fatal to the plants. These articles will help:
(this is about black spot on roses, but it applies to all plants) https://www.gardeningknowhow.com/ornamental/flowers/roses/black-spot-roses.htm
https://www.gardeningknowhow.com/plant-problems/disease/how-to-get-rid-of-sooty-mold.htm
Also, sooty mold is caused by pests, so look for them as well. Fortunately, there is an organic solution that treats this fungus (and the peststhat cause it). Treat the affected with neem oil once a week for amonth. Here is more information on neem oil: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
How do I care for hydrangeas?
Do you mean hydrangeas? If so, here is some information that should help: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/growing-hydrangeas-hydrangea-care-guide.htm
This is an established plant, was here when we bought this house 5 years ago. It hasn't bloomed. Last year we were suggested to put rusty nails under it, which I did. This year it has loads of blooms but they only opened around the outer edges. Why didn't the whole bloom flower? It is planted near a Linden tree, which is on the east of it, and there is a storage building to the west of it, so it doesn't get too much sun, yet enough to make it wilt if it isn't given lots of water. I live in southwest Missouri. I have never removed the old stems that are left after frost.
You may be lacking phosphorus. If there is a lack of phosphorus in the soil, plants will have little to no blooms, or poor blooming. 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
As for the pruning, this article will help for future reference: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/prune-hydrangea-bushes-hydrangea-pruning-instructions.htm