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Plant diseases, landscaping, tropical plants, roses, herbs, plant care, grafting, horticulture, plant identification, anything about plants I can likely answer.

Experience in the area

35 years experience in various plant businesses, 1984 Certified Texas Master Gardener.


Master Gardener Association of Texas charter member


none as of yet, but I have a plant q&a book I am in process of submitting.


Magna cum laude graduate of Texas A&M, 1978

Awards and Honors

Plant growing awards, highest grade for Texas Master Gardener graduates.

Past/Present Clients

Past member of and was very highly rated. Owned landscape company in the past, Almost Paradise, and was very successful despite little equipment, no help, and no advertising. Lived well for two years until 9/11.

Average Ratings

Recent Reviews from Users

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    K = Knowledgeability    C = Clarity of Response    P = Politeness
Lynn08/27/16101010Thank you
Lynn08/21/16101010Thank you
Jill07/26/16101010Melissa's information was spot on! I dug .....

Recent Answers from Melissa Johnston

2016-10-11 alstonia tree disease:

Dear Suneel,  If the worms have eaten all the leaves off the trees, then at least they have moved on and are no longer in the area.  However, I also have seen the pictures that you sent me today where

2016-09-29 alstonia tree disease:

Dear Suneel,  I am very sad that these trees which you purchased just a few days ago already have worms.  However, you will be able to fix this problem.  The worms might actually be some sort of worm in

2016-08-26 Madagascar palm:

Dear Sean, That is a very impressive pachypodium or Madagascar palm.  I was very surprised to see the hole near the top, but it is actually not too uncommon.  This happens a lot with extremely spiky plants

2016-08-25 root damage:

Dear Vivek, For the clay soil areas, the only real solution will be to drain the water away from the trees by a series of small trenches.  The trenches or canals will drain the water away from the area

2016-08-10 fig trees:

Dear Paula,  What a wonder gift!  For best results, I would recommend transplanting your new fig tree in the fall after the weather cools off.  If the tree is small enough, then digging it up is fairly


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