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
Not Yet Rated

Tuesday - July 05, 2011

From: Austin, TX
Region: Southwest
Topic: Shrubs
Title: What fertilizer can make potted plants flower in Austin, TX?
Answered by: Jimmy Mills

QUESTION:

I have a Lantana and esmarelda planted in large pots. They froze last winter but have both come back strong except they do not bloom even though I have fertilized. Is there something special I need to feed them to get them to bloom in pots?

ANSWER:

In checking our Database, I find that there are four species of Lantana that grow in Texas. The name Esmeralda is used as a common name for various plants, and is also the genus name of a group of orchid plants. In short, Mr. Smarty Plants isn’t entirely sure which plants we are dealing with.

However, fertilization may be at the root of the problem, so lets talk about that.  First of all, plants that have frozen and are trying to grow back are under stress. Generally, we recommend that plants under stress shouldn’t be fertilized. In your case, the plants seem to have come back and are exhibiting good vegetative growth, but you want them to flower.

The most common elements that are found in fertilizers are nitrogen (N), phosphorus (P), and potassium (K), and fertilizers containing these three elements are termed complete fertilizers. Fertilizers differ in the relative amount of these elements that they contain, and this information is found on the label of the fertilizer container (bag, bottle, etc.) It is represented by three numbers, eg 1-1-1, or 5-10-5, or 3-1-2, which are the percentages of the elements; N, P, and K in that order. This link from The Great Big Greenhouse and Nursery can tell you a lot more about fertilizer.

You didn’t mention what kind of fertilizer you used, ie the ratio of N:P:K. In some plants, flowering is inhibited if the ratio of  N/P is too high. If you used a regular lawn fertilizer, the N/P ratio in your pots may be high enough to prevent flowering. This link to Central Texas Gardening has some good tips about proper use of fertilizers.

 

More Shrubs Questions

Hardiness of Acerola bush for Conway AR
January 25, 2013 - How far north can you grow an Acerola bush? I live in Conway, AR, which is north of Little Rock.We used to be Zone 7, but now we are on the edge of Zone 8, I believe.
view the full question and answer

Shape of common ninebark in Canton MI
April 24, 2010 - I have planted one center glow ninebark in a triangular area in between my front walk and driveway. It looks a little odd just having one plant, but I originally did this b/c of the mature plant heig...
view the full question and answer

Shrubs to stabilize steep slope in California
February 03, 2010 - Suggest shrubs to stabilize steep bank that are drought resistant and resistant to too much rain. Cape honeysuckle? oleander? bottle brush? What?
view the full question and answer

Safe grazing for donkeys and goats from Osteen FL
June 30, 2012 - I am having a very difficult time trying to find shrubs, hedges, plants, flowers, or trees etc. that are safe for donkeys and goats. We live in Zone 9 and have a small farm. I've had to pull every ...
view the full question and answer

Plants for pool area in Florida
May 09, 2008 - My husband and I have a pool with 4 planters and are looking for plants that we can put into our screened in pool area. We live in Central Florida and looking for ideas of plants that are slow growin...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP | STAFF
© 2016 Lady Bird Johnson Wildflower Center