En EspaŅol

Q. Who is Mr. Smarty Plants?

A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

Share

Ask Mr. Smarty Plants

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
    
 
See a list of all Smarty Plants questions
Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.
Need help with plant identification, visit the plant identification page.
 
rate this answer
3 ratings

Monday - June 30, 2008

From: Walnut Creek, CA
Region: California
Topic: Non-Natives, Transplants
Title: Decline of non-native Star Jasmine in California
Answered by: Barbara Medford

QUESTION:

We just had 2 trachelospermum jasminoides planted in a redwood planter box about a month ago. We can't figure out if we are watering too much or too little but some leaves are turning yellow and there has been little new growth lately. Please help save our jasmine!

ANSWER:

The first thing that comes to mind is transplant shock, since you only planted it a month ago. This is something people overlook, as they buy a fresh, blooming plant, stick it in the dirt, and it suddenly droops. The most important thing: is there good drainage in that redwood planter? In other words, when you water, does water come out through drainage holes? Nothing will wipe a plant out sooner than standing in water. Once you've examined the drainage, here are some things to consider. The Star Jasmine, which is a native of China, needs a year or two to get a good root system going. Also, it blooms in April and May, ordinarily, and should bloom only sporadically the rest of the year. It is fully hardy in USDA Hardiness Zone 8, in a sunny location. The best we can tell, Contra Costa County, in the north central coastal area of California, is Zone 8, so it should be fine. Now, to deal with the transplant shock. Prune off the upper 1/2 to 1/3 of the plant, and trim out any crowded vines that are not looking well. This will give the as-yet undeveloped roots a little breather, with less upper growth to get water and nutrition to. Then, use a slow drip to water, sticking a hose in the planter, and just let it dribble (watching the drainage) until it seems all the soil is moist. You need to check the soil, and repeat this fairly frequently. Planters will dry out faster than plants in the ground, because they are exposed on all sides but the bottom to the air. Removing those leaves from the upper part of the plant will also help in preventing moisture loss by transpiration. Early next Spring, before blooming time, give it some fertilizer with a good proportion of phosphorus in it, to encourage blooming. And be patient!

This University of Florida Cooperative Extension website Trachelospermum jasminoides will give you more information.

 

More Non-Natives Questions

Question about non-native bottle brush bush
September 12, 2008 - I have a bottle brush bush it has not bloomed. I have had it about 6 months planted in the ground. I am worried it may not. can you tell me what you think. thanks lori
view the full question and answer

Leaves on non-native Confederate Jasmine dry up in Buda TX
June 23, 2011 - Leaves on star or confederate jasmine vine dry up. Not due to lack of water and I can't find any insect damage. Starts with one shoot and then spreads to entire plant. I will try to attach picture...
view the full question and answer

Care of Passiflora incarnata or Passiflora coccinea
July 04, 2007 - Hi- I have two passionflowers, one red, one purple. I live in upstate NY. They grow very well up onto trellises, however, they have stopped producing flowers. Both are planted in pots (fairly large)...
view the full question and answer

Replanting of non-native Christmas Palm from Sarasota FL
November 28, 2012 - Do you know of a proven technique to plant a Christmas Palm in a built-in concrete pool deck planter box - using gravel around the soil root ball to delay the root bound condition we just ripped out?
view the full question and answer

Non-native bulbine damaged by freeze
March 15, 2010 - Our Texas bulbine were hit hard this year. The tops are dead, not sure if any roots are still alive. Should we trim them back to the dirt; if roots are still alive, will they emerge again via root s...
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP
© 2014 Lady Bird Johnson Wildflower Center