Hi These are newly planted Hydrangeas, and they don't look good at all. We planted them exactly as the directions suggested. They looked fine in the pots, but not good at all in the ground. Any suggestions on what we need to do would be greatly appreciated.
I'm wondering if perhaps you've overwatered your plant. In addition to transplant shock, it looks like there may be a bit of root rot going on. You should trim away any bad leaves and clean a little around the base of the plant. Does you soil have good drainage? This may be a matter of just being patient, not over or under watering, and keeping it trimmed up a little. Here's an article, in case the problem doesn't resolve:
https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/common-hydrangea-diseases.htm
and here's one on transplant shock:
https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm
I have two plain pink hydrangas. I also have two newer varieties, one is white with deep frilly pink edges, the other is the white cone shaped flowers variety. I don't have a lot of space to put them. (They are all in tubs). If I put them very near to each other (the leaves and flowers will be touching) are they likely to cross pollinate and I might end up with 4 plain pink ones, which I don't want to happen, the newer varieties are beautiful and were very expensive!
Nothing could happen to the ones you have, but any new shrubs that pop up might be from the big leaf pink hydrangeas. The others are different species so they shouldn't cross.
First, the leaves on my macrophylla hydrangeas are turning yellow and falling off. Try to mostly water from bottom but had several weeks of rain in April. Second one is my gardenias planted in containers. Most of the buds are turning yellow before they bloom. Last, blueberry bush has something and I have no idea what it is.
Unfortunately, your photos did not come through. I am unable to assess the damage. It does sound like overwatering, and generally wet soils, have left the area with a fungal or bacterial infection. Fungicides will be necessary, should this be the case.
The blueberry may have an infection, as well, but most of the time blueberries suffer form the wrong feed. Nitrates will kill blueberries, so fertilizers should be ammonium sulfate based, rather than ammonium nitrate based. This will, also, mean that it will be necessary to check the soil it is planted in. Most soils are amended with nitrates in some form.
Here are some articles that will help:
https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm
https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/mophead-hydrangea-care.htm
https://www.gardeningknowhow.com/ornamental/flowers/gardenia/gardenia-plant.htm
https://www.gardeningknowhow.com/edible/fruits/blueberries/growing-blueberry.htm
I received a Lasting Beauty Hydrangea (pink sky) and it was looking beautiful but has started browning on blossoms. The tag does say 3-6 hours of sun....but my other plants are out in the open sun and I have never seen browning on the blossoms.....any idea or something I should do or look for??? Could it be too much sun, or too much watering or too little watering . Thanks for any suggestions.
This variety needs morning sun and afternoon shade. So if it is getting the harsh, afternoon sun it may be too much. It also prefers moist soil so be sure you are watering enough but not leaving it saturated. Well-drained soil is important for most plants.
https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/mophead-hydrangea-care.htm
I've checked the base of the main stem and there seems to be small bore holes made by an insect. I've read that you should cut off anything above the bore holes but if its at the base of the main stem can I cut back most of the plant and it will still grow back?
Usually borers are in the branches and you can cut off the affected branches. I don't find any source that says hydrangeas are bothered by borers, so be sure that is what you are seeing.
Cutting back your hydrangea to the ground will revitalize it and it should come back. However, that is best done in the spring before new growth. But if you have borers, that is your only non-chemical option.
https://ucanr.edu/datastoreFiles/268-86.pdf
https://agrilifeextension.tamu.edu/library/landscaping/wood-boring-insects-of-trees-and-shrubs/
The established hydrangea is pink so I am very disappointed as I have propagated these for my family.
This article explains how that happens. It's not usually permanent. I had green one year and pink the next.
https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/green-hydrangea-blooms.htm
Many of the leaves have holes or tears in them near the stem and then the stem doesn't hold them up. Others have brown spots and holes. Flower buds seem o.k. I don't see any bugs.
Looks like pests. Sometimes you have to go out at night with a flashlight to see what are eating the leaves. Here is info about bugs and leaf spots.
http://www.uky.edu/Ag/Entomology/treepestguide/hydrangea.html
https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/spots-on-hydrangea-leaves.htm
https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/common-hydrangea-diseases.htm