Ask a Question forum→Star Jasmine vine has never flowered

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Houston, Texas
themonarchkey
May 23, 2019 1:17 PM CST
I had star jasmine planted against a fence three years ago and now it has covered the entire fence. It is lush and green and growing beautifully. However, it has NEVER flowered. At first I thought it just needed time but then I saw someone else's tiny little plant flower and realized something is wrong. I added liquid organic flowering fertilizer twice over a month (it was hard to actually put in the soil effectively because it's so dense at the base--I did my best) and have been told to add a good compost as well. Here are my questions: 1) After adding the liquid fertilizer, how long should I wait before seeing results? Next Spring?? 2) Is there a trick to adding compost to a hard to reach area like the base of these crowded vines? 3) Could my plants have been duds? A "professional" planted them so I assume the soil composition should have been appropriate to start with. But fertilizer had been added about a year into the planting. Any advice?? Thank you!
Thumb of 2019-05-23/visitor/0dcb40

Name: Big Bill
Livonia, Michigan (Zone 6a)
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BigBill
May 23, 2019 4:01 PM CST
Too much fertilizer! Stop using it so often.
Say that it is not getting enough light in order for it to bloom. The only thing that fertilizer might do is to make it produce more green growth that won't bloom either!!
When you grow orchids, it is all about the ROOTS!!!
Name: Patty
Sarasota, Florida (Zone 9b)
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SarasotaPatty
May 23, 2019 4:33 PM CST
For clarity...how often is this being fertilized? The way I read it, the plant was fertilized at the one year mark, and now- 2 years later--- you have fertilized twice in a single month...is that correct??

I agree with Bill that light could be the problem...in the photo, half of the vine is in the sun---how much light does it get?

I have a star jasmine that has taken over a 4 X 6 piece of lattice...mine tends to grow fuller at the top, and thins out at the bottom as it grows taller. It gets full sun all morning and most of the afternoon and blooms a few times a year.

Are you sure it's a star jasmine and not a confederate jasmine? I can't really tell from the photo. My confederate jasmine is a much darker green (like your photo) than my star jasmine...
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Name: Big Bill
Livonia, Michigan (Zone 6a)
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BigBill
May 23, 2019 4:37 PM CST
Listen to Patty, she knows her stuff! One smart cookie!!
When you grow orchids, it is all about the ROOTS!!!
Name: Suzanne/Sue
Sebastopol, CA (Zone 9a)
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Calif_Sue
May 23, 2019 5:19 PM CST

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Both common names of Confederate and Star jasmine are the same plant.
Star Jasmine (Trachelospermum jasminoides)

Maybe you are thinking of Poet's Jasmine (Jasminum officinale)
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[Last edited by Calif_Sue - May 23, 2019 5:22 PM (+)]
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Houston, Texas
themonarchkey
May 23, 2019 6:13 PM CST
Oh I really should correct myself---I forgot that it produced TWO little flowers this year that were lovely and fragrant. I almost missed them though in all that greenery. That's the only reason I know for sure it's a Star Jasmine. In regards to fertilizer, it was fertilized once at the one year mark because it seemed not to be growing very much. Then in an attempt to address this non-blooming issue now at the three year mark, the advice I got from a gardener was to add Microlife Bloom 3-3-3 to it (because it has more phosphorus to counteract a possibly nitrogen-heavy soil). I did that twice in the last month as a possible remedy to this issue. No other fertilizer otherwise since it was planted. During different times of the day that entire fence gets lots of sun. When I pry underneath at the roots, I notice that the ground is covered with brown decaying leaves (from a nearby tree I assume) and the soil therefore is moist. I wonder if that is a problem as well?
Name: Big Bill
Livonia, Michigan (Zone 6a)
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Region: United States of America Critters Allowed Growing under artificial light Echinacea Hostas Region: Michigan
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BigBill
May 23, 2019 6:32 PM CST
I go back to my original post. If that has never flowered well in three years, it is definitely from a lack of sunlight.
I had one in my backyard in Florida. It easily got 6, to 8 and during the warmer months close to 10 hours of sun a day. Summer sun where I was was almost directly overhead.
It bloomed profusely during the month of May and sporadically after that.
I feel that you may think that it is getting enough sun and I say if it was, it would be blooming, and blooming well. What direction is that fence facing? The leaves appear to be a very dark green, mine in Florida had leaves that were "grass green in color".
Mine flowered in May, at the beginning of the rainy season. I don't think that less water would keep it from blooming and the pool seems to have no effect so that leaves us too much fertilizer, too much heat or not enough sun.
When you grow orchids, it is all about the ROOTS!!!
[Last edited by BigBill - May 23, 2019 6:33 PM (+)]
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Name: Patty
Sarasota, Florida (Zone 9b)
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SarasotaPatty
Jun 10, 2019 8:00 PM CST
Now I'm sort of confused! I'm no jasmine expert

This is my Confederate Jasmine, growing for many years on a pole that at one point had a bird house at the top of it, it's a very dark green (like yours), and here is a picture of it's blooms. Like Big Bill, mine also blooms in May...I have never fertilized it and I do not water it...it just grows and blooms all on it's own, but it IS in full sun for MOST of the day:

Thumb of 2019-06-11/SarasotaPatty/be381b Thumb of 2019-06-11/SarasotaPatty/658a72

This is what I know as Star Jasmine, and it's bloom as well (the flowers, and leaves are quite different from the Confederate jasmine, and even the 'stems' are different, harder and not quite as vine-y as the Confederate) It has covered a lattice panes, is not far from my Confederate, so is also in sun most of the day and again, I do not water or fertilize:

Thumb of 2019-06-11/SarasotaPatty/392145 Thumb of 2019-06-11/SarasotaPatty/403f10

Maybe @Calif_Sue can shed some more light? Confused

I'm sorry, I guess I'm not much help for your original question @themonarchkey... Sad
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Houston, Texas
themonarchkey
Jun 12, 2019 10:22 AM CST
Thank you for all the suggestions and thoughts.

My fence gets a lot of sun so they're not sun-starved, especially the section in the photo that is bright and sunny. That spot gets sun almost the entire day so at least that section should bloom I assume. It's a a west facing fence. The shady part is from a nearby tree and I took this photo in the later part of the afternoon.

Star Jasmine is really popular in my neighborhood and plenty of yards do not get full sun (we are a community of small lots with houses all up against each other almost), and still have plants that bloom. A garden expert suggested that I may have gotten a bad batch of plants. I have never heard of that before! It's unfortunate and I may pull them out and start all over if I can confirm that's the case. Anyone heard of "bad batches"?
Name: Patty
Sarasota, Florida (Zone 9b)
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SarasotaPatty
Jun 12, 2019 2:15 PM CST
Sorry again, a "bad batch" of plants is new to me too! I'm at a loss! Even 'sterile' plants should still bloom I believe... Shrug!

Maybe instead of taking it ALL out, you could remove some small 'sections' and put a new plant in each section...this way you don't go all shockingly bare at once...

Good Luck! Sorry I couldn't be more help!


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Name: Suzanne/Sue
Sebastopol, CA (Zone 9a)
Sunset Zone 15
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Calif_Sue
Jun 12, 2019 2:30 PM CST

Plants Admin

Can you take some closeups of the leaves? maybe it's not even a jasmine. Shrug!
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Houston, Texas
themonarchkey
Jul 10, 2019 12:27 PM CST
It's jasmine. I only know for sure because it produced two lonely star jasmine flowers this spring across that whole entire fence. What a mystery!!

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