My hydrangea blooms but the flowers do not flower completely. Some will bloom yet the other buds on the flower never complete the bloom. What is my problem?
You might have a lacecap hydrangea, which often behaves this way. They might also fail to bloom completely if they are not getting enough light or in a zone that is too cold for that variety's preference.
Mine will bloom, but stays green.
This article will help you:
https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/green-hydrangea-blooms.htm
I own a hydrangea tree and the branches are all growing towards the front of the tree. How do I train the tree's branches to fill in the empty spots so it has a uniform shape?
This might be an issue of where the light is coming from. If the tree is shaded on one side, you may not be able to do anything about it.
If light is not the issue, pruning should be able to fix the problem. These sites have great guides to pruning shrubs with how-to pictures:
https://pubs.ext.vt.edu/430/430-459/430-459.html
http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/pruning-trees-shrubs/
This article will also help:
I have 3 hydrangeas that only had about 2 flowers each this year. These face east and get full sun until about 2 pm in summer. Big, lots of green but no flowers. I put holly tone on in spring. These are into their 3rd year.
This is likely a pruning issue. Some hydrangea varieties bloom on old wood (wood that grew the previous year during late summer and fall) and should be pruned in the summer before August, while others bloom on new wood (stems that grew that same spring and summer) and should be pruned in fall or winter.
https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/prune-hydrangea-bushes-hydrangea-pruning-instructions.htm
https://ag.umass.edu/fact-sheets/growing-tips-hydrangeas-pruning-for-blooms
Here are some other possibilities for why a plant wouldn't bloom:
https://www.gardeningknowhow.com/plant-problems/environmental/plant-not-blooming.htm
I have had a Hydrangea plant for years, but it has quit blooming. What to do for it?
This article will help you pinpoint the reason your Hydrangea is not flowering.
https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/hydrangea-not-blooming.htm
I live in Inverurie, Scotland (57deg 16min North; 2deg 22min West). For the last two years, my Hydrangea has been attempting to flower from September, but has never delivered full blooms. In previous years, there would be abundant flowers in summer. The only change I am aware of is the addition of a small fence on one side. I am attaching some photos, with text. Thanking you in advance, David Duggan.
This could be a nutritional issue or a pruning issue. These articles will help you:
https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/hydrangea-not-blooming.htm
https://www.gardeningknowhow.com/plant-problems/environmental/plant-not-blooming.htm
I live in Scotland, UK. When is the best time to cut back two very large 10 year old hydrangeas? They have never been cut back, only the flowerheads cut in the spring. The low inner stems from the ground are brown with no growth. There are always plenty of flowers but this year the leaves are speckled with brown spots. They are a lovely feature in my front garden. I hope you can help and thank you in advance. If you wish a photo, please let me know, but it is dark outside now! Kind regards. Rebecca Crawford.
The best time for yearly pruning depends on the type of hydrangea you have, but in the case of an overgrown hydrangea, the best option is to cut it back in late winter or early spring to just a few inches above the ground.
https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/prune-hydrangea-bushes-hydrangea-pruning-instructions.htm
https://www.rhs.org.uk/advice/profile?pid=516