En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Decline of non-native Star Jasmine in California

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

Moving non-native Iris Germanica in Pennsylvania
May 30, 2009 - I am moving from Northeast Pennsylvania to North Carolina this fall or winter. I was told it was possible to save some of my bearded Iris plants by digging them after they bloom and allowing them to ...
view the full question and answer

Is Gooseneck native from Cleveland Heights OH
July 20, 2012 - I live in Cleveland Heights, OH, and have an abundance of gooseneck in my yard. Is it a native plant? Thank you!
view the full question and answer

Non-native Sago palm roots damaging house foundation from Keystone Heights FL
July 03, 2013 - Will sago palms roots hurt a house's foundation if too close?
view the full question and answer

Is Hibiscus coccineus still considered native in Dallas, TX?
July 15, 2011 - Is Hibiscus coccineus still considered native?. I recently was told by someone with the Native Texas Plant Society that it was no longer thought to have crossed the Sabine naturally. Thoughts...
view the full question and answer

Growing fruits and vegetables from Holbrook NY
April 06, 2012 - I have been looking for information on what plants, vegetables and fruits can be grown on Long Island NY to provide a sustainable food source for a community in the event of food becoming scarce. Wha...
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