I brought it in on the first sign of cold temps, then they went back up and probably won't drop until end of Oct. Did I bring in too soon? Also, leaves are turning bright red, then die and fall off...why?
When the light falling on a plant changes suddenly, it causes a massive upheaval in the plants' systems. They try to get rid of as many leaves as possible to compensate for the reduction in energy, etc. That's why the best practice is to accustom plants to light changes slowly. We call that acclimating them. Here's an article that will help you do that without such a shock to your plants. https://www.gardeningknowhow.com/houseplants/hpgen/acclimate-plants-indoors-winter.htm
PS you can take your plant back outside now, then continue with the acclimating process.
What can I spray on Asiatic Jasmine to kill it? I have tried Round Up but it does not phase it.
Glyphosate compounds don't work well on drought resistant plants because the leaves are too tough. Try glufosinate or tricolpyr compounds; dicamba might be worth a try, also. This list explains more: https://extension.tennessee.edu/publications/Documents/W244.pdf
My jasmine tree just does not flower. It has lush foliage & no flowers.
Generally speaking, when a flowering plant has beautiful green growth but no flowers it's because there's too much nitrogen and/or not enough phosphorous. A second common cause is too little sun. This article has more information: https://www.gardeningknowhow.com/plant-problems/environmental/plant-not-blooming.htm
I just bought a climbing jasmine and read that it likes to be moist. So will too much water (rain) hurt my plant?
Jasmine need a sheltered area with a trellis or support system. Well draining soil is also important for success with your jasmine.
Here is a article that will help you get your plant started out right.
https://www.gardeningknowhow.com/ornamental/flowers/jasmine/growing-jasmine-plants.htm
My primrose jasmine isn't blooming - they are planted in the ground in partial shade. These plants are about 3-4 years old and are fully developed. They are large adult plants. A few blooms here and there.
This article will help you pinpoint why your jasmines are not flowering:
https://www.gardeningknowhow.com/ornamental/flowers/jasmine/non-flowering-jasmine.htm
It has lately stopped flowering but now the leaves are very dry and some are brown. l have trimmed it back and there are one or two new shoots.
How often does the plant get watered? Is it possible it has been under or over-watered? Feel the soil - is it dry to the touch (it is under-watered and needs water) or is it damp/wet (it is over-watered - cut down on watering)? If it has been over-watered, you should re-pot the plant in fresh potting soil after you inspect and prune any damaged roots.
If hydration is not the problem, your jasmine could be suffering from a fungal disease and I have included a link for you to review below.
For more information about jasmine plant problems, please visit the following link:
https://www.gardeningknowhow.com/ornamental/flowers/jasmine/treating-jasmine-leaf-drop.htm
https://www.gardeningknowhow.com/ornamental/flowers/jasmine/diseases-of-jasmine.htm
I would like to know if the Jasmine plant loses its leaves in the winter. I live in a coastal area where it can be quite windy.
Basically it depends on how cold the winter. Some varieties of jasmine have the potential to retain their winter leaves, but only so long as temperatures do not dip below a certain point. Confederate jasmine, for example, is an evergreen variety that will keep its leaves unless temperatures dip below 15F.
For more information about jasmine please visit the following link:
https://www.gardeningknowhow.com/ornamental/flowers/jasmine/