My trumpet creeper is 8 years old and is very vigorous, but has never bloomed. It is on the south side of my shed and has climbed about 12 feet. It has lots of nice leaves but doesn't bloom.
This has two main causes. This can happen when there is too much nitrogen in the soil, or the pH is too low. You can offset this by adding a bloom formula, which will have potassium and phosphorus, but little or no nitrogen. If you believe your soil is very fertile already, and just a low pH, then you can add dolomitic lime to raise the pH. If that does not help within a year, then you will have to add fertilizers.
This article will help you on the care of these: https://www.gardeningknowhow.com/ornamental/vines/trumpet-vine/growing-trumpet-vines.htm
Fall or spring?
These are best planted after the last frost for the year in Spring. Here is an article that will help you to care for them: https://www.gardeningknowhow.com/ornamental/vines/trumpet-vine/growing-trumpet-vines.htm
I lived in TN for a short time and saw millions of wisteria hanging from the trees. Absolutely beautiful. I moved to southern AZ and have seen wisteria here so I obtained some pods. My question is: is wisteria a parasite to trees? I have mesquite trees and would like to see wisteria hanging from some of them. Will it kill the tree? Thank you
There might be something else that is in the trees, unless they are rooted to the ground.
As a TN native, I can say that wisteria doesn't really naturalize here, nor does it escape captivity, too often. They are terrestrial plants, and will grow in soil.
If you had a photo I could help to ID it, but it would be hard to say what it was. We don't have a very wide selection of parasitic plants here. The most common that we see is Mistletoe.
Something that you will see lots of, that may get mistaken for wisteria is called Campsis radicans. This twining weed is highly invasive, attracts ants, and will grow up and constrict anything that it comes into contact with over time.
This is likely what you saw, as it is rampant here.
Here is some more information: https://www.gardeningknowhow.com/category/ornamental/vines/trumpet-vine
I have a trumpet creeper that I purchased last year. It still is not growing any leaves yet. I know it won't bloom for a long time yet I was just wondering about the leaves.
These are highly invasive in your area. You can be sure that it will eventually grow. They are probably late to break dormancy. You may want to go ahead and look into ways to control it so that it does not get out of hand and take over your entire yard. This article will help you to grow these properly: https://www.gardeningknowhow.com/ornamental/vines/trumpet-vine/growing-trumpet-vines.htm
ell us if there is hope for them? You can see from photos how beautiful they have been. If we prune them now, is there a chance they will come back this summer? We have never had to really do anything thing except trimming because vines were growing crazy!
These articles should help. I would go ahead and prune and see if that helps.
https://www.gardeningknowhow.com/ornamental/vines/trumpet-vine/pruning-trumpet-vines.htm
https://www.gardeningknowhow.com/ornamental/vines/trumpet-vine/trumpet-vine-losing-leaves.htm
It's been strong and healthy for 4 years. Always blooms. It is the end of May and I don't see any leaves on the top branches, just new growth at the base. Is it dying?
If this has not been pruned during those four years, then this will be necessary to rejuvenate the vine.
Here are some articles that will help:
https://www.gardeningknowhow.com/ornamental/vines/trumpet-vine/pruning-trumpet-vines.htm
https://www.gardeningknowhow.com/ornamental/vines/trumpet-vine/growing-trumpet-vines.htm
I have had a trumpet vine for 2 years now. It is in a very sunny spot with support. The soil is terrible though but I thought it didn't matter. When I planted it I added quite a bit of compost to the soil to give it a start since my soil is nothing but dry dead sand. It grew a little the first year and bloomed quite well. By a little I mean it grew about a foot. So it is now about 2 feet tall only. I am worried that I should amend the soil around it or even move it. I know they are tough and fast growers so I am worried. Thanks ...
If it is indeed the big orange-flowered trumpet vine (Campsis radicans) and not trumpet honeysuckle (which is slow to take off) it should be taller by now. It is a vigorous grower, and if not contained, will sucker underground and come up all over the place.
You didn't say where you got it, but it's possible it is not mature. Usually people have problems with it blooming, but you say yours bloomed.
The conditions you provide seem ample. I would say try pruning the vines back about half to encourage growth. In fact in the spring, you can cut them completely back.
Here is more information about caring for trumpet vine:
https://www.gardeningknowhow.com/ornamental/vines/trumpet-vine/growing-trumpet-vines.htm