Top Questions About Mexican Petunias

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Questions About Mexican Petunias

Asked by
Anonymous on
February 15, 2014

Q. Mexican Petunia

My Mexican petunias have slowly developed white stems. There are about eight different plants in the same area and the first one that turned white has died. What could be causing this? Thank you.

Answered by
Nikki on
February 15, 2014
Certified Expert
A.

It sounds like it is a fungus, but it will be hard to confirm without a picture. Can you please send us a picture of the plant? If it is a fungus, a fungicide will help correct it.

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Answered by
Agronoman on
February 16, 2014
A.

There is a soil borne fungus that actually consumes organic matter in the soil. Occasionally, it progresses to the extent it affects your desirable plants. As a home owner, your best bet would be to drench the soil with a mix of water and hydrogen peroxide. Include a few drops of soap as the fungus repels water which makes control in the soil difficult.

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Asked by
jodyjet50 on
July 14, 2015

Q. How do you grow WHITE Mexican Petunias?

I have lots of purple and pink Mexican Petunias. How do I grow a white one?

Answered by
Downtoearthdigs on
July 15, 2015
Certified Expert
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Asked by
anlcole33 on
December 16, 2016

Q. Mexican Petunias

Our recent cold temps have made our many Mexican petunia plants kaput. Do we remove the blackened foliage or leave it for spring?

Answered by
Alisma on
December 16, 2016
Certified Expert
A.

If the whole plant has been killed back to the ground, you can cut off all the foliage. The plant should grow back from the roots in the spring. If just the tips of leaves have been damaged by the cold, it's best to leave the plants standing until spring.

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Asked by
Beverly French on
June 30, 2017

Q. potted petunias

Hello: My petunia will not open. Some different color ones in different pots. The tube is there and the top is all curly but it folds in on itself and will not open. Why? I have never had this before.
Bev Hope you can make it out in the picture, the white ones show it better than the red or purple.

Answered by
Downtoearthdigs on
July 5, 2017
Certified Expert
A.

Try feeding them with a phosphorus fertilizer, such as Bone Meal.
This article has more information.
https://www.gardeningknowhow.com/ornamental/flowers/petunia/petunia-plant-no-flowers.htm

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