I'm a complete newbie with this so no I have not yet fertilized. I got the plant around June last year, so I've had it about 8 mouths now. The only fertilizer it's had is what came in the potting mix I potted it in. I think what fertilizer was in that should have been good for about 6 mth. ...maybe that's newbie optimism. What do you recommend and how often?

Hard 2 say what the ACTUAL problem is, but it's undoubtedly suffering some nutritional deficiencies that would be prime candidates. Foliage-Pro 9-3-6 is a very good all-in-1 fertilizer that's pretty foolproof - I'd get some. How often you use it depends on your watering habits and choice of soil. You'd never guess that, would you? ;-)

Al

Yes these are heavy feeders, but to me it sounds like herbicide damage. Do
you use herbicides on your lawn? Even spray from the neighbors can drift. What
you describe sounds like herbicide damage. If this is the case, it will
eventually correct itself. it make take a season to do so, Feed it! I'm
surprised you overwatered it as these plants are hard to overwater.

Thank you for all the help! @ drew, I do not have it in my yard, it is a container on my lanai and we have not used anything on it but neem oil. If stuff is flying in from other yards, I'm not sure, but I can't rule it out. I had been keeping the soil moist, as that was the recommendations on the info card it came with from the nursery. Obvioulsy dead wrong, another fellow gardener said they preferred to dry out, so that's what I've been doing, with a drastic improvement.

@ tapla I just received my order of Foliage pro 9-3-6 yesterday and gave her a feed. It recommended doing so about once a week, so I will try that and see how it goes. She has almost 30 buds getting ready to bloom already, so hopefully I got the feed in time for those buds to actually stay and not die. I shall see!

OK, well I thought lanai was one of the
Hawaiian islands. If it is open to the outside and they spray your lawn for
weeds, it could drift unto the plant, if the area is open to the outside? I
fired my lawn service as all my pots were exposed from spraying the grass. My
pots were on my porch, and not near the grass. Damage appeared on one side, where the wind was blowing on them. And I agree with the nursery most
jasmines like to be moist. Not wet, moist, wet is not good for anything! But I would try drying it out. My Arabian prefers to
be moist, but it's fine when dry too.

I also have a night blooming jasmine, and a jasmine hybrid.

Here's the night blooming

http://i128.photobucket.com/albums/p181/whitenoise_photo/006-7.jpg

F - There are several nutrients, that when deficient or present at toxic levels, cause abnormal and distorted growth. Several micronutrients (deficiency or toxicity) can cause the issue, as can a deficiency of calcium distort new growth. If the distortion is manifest in only new growth, suspect Ca or a micronutrient as the issue. If it is evident in new AND old foliage, you might then consider herbicide injury as a possibility. If you see the issue clearing up, with new growth being normal after you started fertilizing, you can be pretty sure it was a nutritional issue.

FWIW - some plants tolerate wet soils better than others, but that a plant tolerates is not indicative of its preferences. Your Jasmine likes an evenly damp or moist soil that doesn't support a soggy strata at the bottom of the pot.

Al

Some good points Al. It's hard to diagnose these things even when the plant
is right in front of you. Only a leaf analysis will tell you for sure. It's nice
when you have somebody who has grown them a long time as they have dealt with
common problems. I have not. I listen to a garden show out of Utah and the guy
knows the area, Some trees suffer there due the soil lacking certain nutrients,
whereas others seem to be more tolerant of lower levels, and he knows which do
well, and which do not. The soil there is deficient in iron. Native trees are
used to the low levels and have adapted ways to retain more iron. So the native
maples are fine but say a maple from Michigan imported there suffers from iron
chlorosis, and he nails it every time as to what the problem and condition is.

So an expert in jasmines, may know exactly what this is.

Keep us updated on the plant, as we all can learn something.

Thank you so much for all your advice! I have since received the Foliage pro and been actively feeding once a week. She has retained almost all her blooms! only maybe one or two have purpled before opening, but compared to losing them all before, that's progress. Below are some pics of what she looked like before her regrowth ( my unfortunate over-watering) and what she looks like now, plus what the crinkly leaves look like.

BEFORE