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

An evergreen, deer-resistant shrub for Memphis
July 24, 2013 - I need an evergreen, deep to partial shade, deer resistant shrub or tree. Does such a plant exist?
view the full question and answer

Preventing weeds in kinnikinnick in Richland WA
May 29, 2011 - We planted our kinnickinick last Nov. and we live in Richland, WA, where it gets hot in the summer. We planted almost 500 of them on a hillside. Weeding is taking over our lives, to say the least. ...
view the full question and answer

Windbreaks for Monterey County, CA
May 31, 2013 - I am trying to find good wind breakers for Monterey County area, very windy in the valley.
view the full question and answer

Locating Rosa rugosa for Massachusetts
May 09, 2006 - There is a shrub that grows out on the Cape especially at the beach. I have always called it Beach Rose and I have heard other people call it a Beach Plum. However, the most recent picture of a Beac...
view the full question and answer

Need help with my Mountain Laurel in Sugarland, TX
June 22, 2011 - Texas Mountain Laurel - My plant's leaves are turning yellow and falling off. I don't know if this is caused from over watering or under watering. I have skipped days of watering to see if it will h...
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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center