My star Jasmine is drying up. . . since I brought it inside. It is on a trellis and by the window. . . is it a gonner?
These plants love high humidity. You can try misting it daily or setting it on a tray of pebbles with water in it to raise the humidity. If the vine itself is not dead, it should recover once the humidity is corrected.
I have 120' of star jasmine attached to a fence. Most plants have been there about 4 years. Most are healthy, blooming, growing...About 10 linear' (3 plants) have been replaced twice and are dying again. The soil tests neutral. If the neighbors on the other side of the fence used a weed killer, would the soil still test "good"?
Unless you specifically ask for testing to be done for certain chemicals, soil testing is only going to show pH and some soil minerals
There are leaves and flowers outside, but dead branches on inside. The one jasmine next to it is full and healthy.
The fact that the plant next to it is healthy kind of rules out cultivation issues such as water, light, soil, etc. Two things occur to me; one is that the failing plant is simply not a strong individual. In my experience some plants just don't make it, no matter what you do. The other thought is that a disease may have started. You'll want to get an analysis of the possibilities to protect the other plant(s). Take some samples of leaves, stems, and roots/soil to the nearest extension service for advice. This link will help you find the nearest one: https://www.gardeningknowhow.com/garden-how-to/info/what-is-extension-service.htm
Star jasmine leaves are turning red in the spring, warm weather. What is wrong with a star jasmine leaves turning red?
This is a normal occurrence and is not cause for concern. Here is a link with more information on why star (confederate) jasmine leaves turn color:
It's summer in Texas (although it's been raining more than usual). I have 2 star Jasmines in arch form. The one on the right is shedding all the leaves and looking dead. What can I do? Please help!!
This is most likely due to the excess rainfall.
If you have mulch at the base of the plant, pull it back to help with the soil moisture.
Here are some links to help you.
Mine has lost all of its leaves, but it continues to grow what looks like flower buds. What happened? This one is in a large pot. Does it need to be repotted?
Have you fertilized your vine?
Have you maintained a daily watering schedule?
This link will refresh you on the care requirements.
We planted white star jasmine in tall pots to trail up our pergola (permanent outdoor installation in Houston, TX). The first year it did well, but this spring/summer the growth has been very minimal and the vines have fewer leaves. The pots are about 3 feet tall and 1 foot square. The root ball was installed in the top 12" of the pot for max height onto the pergola. I put an upside down plastic container in the bottom along with drilling a hole for drainage. The rest is filled with soil. I water regularly but allow the soil to dry out between. Do I need to fertilize? If so, with what and how often? Is a permanent installation in a pot not a good idea for this plant?
Yes, your vine does need regular fertilizer application.
These links will help you.