Top Questions About Christmas Cactus Plants

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Questions About Christmas Cactus Plants

Asked by
dukcemujer182 on
July 29, 2019
Orlando, FL

Q. Christmas Cactus has a white kinda cotton like in between its leaves…just noticed this.

It can be cleaned off but I don’t want it to harm the plant. What is that and why?

Answered by
BushDoctor on
July 29, 2019
Certified Expert
A.

This depends on, exactly, how it looks. Two things come to mind. Powdery mildew (somewhat easy to get rid of) and Mealy bugs (Difficult to get rid of)

I will include articles for both, and general care of the plant:

https://www.gardeningknowhow.com/houseplants/hpgen/powdery-mildew-treatment.htm

https://www.gardeningknowhow.com/plant-problems/pests/insects/mealybugs-control.htm

https://www.gardeningknowhow.com/ornamental/cacti-succulents/christmas-cactus/advice-for-christmas-cactus-care.htm

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Asked by
Anonymous on
August 8, 2019

Q. “a good horticultural soap spray” – name one, please

https://www.gardeningknowhow.com/ornamental/cacti-succulents/christmas-cactus/christmas-cactus-fertilizer.htm provides a fantastic amount of information and URL’s. However, unfortunately, there is no footnote for “a good horticultural soap spray.” Please, (1) consider an edit for that; BUT (2) identify one or more examples of a specific product name. AGAIN, it is obvious that ‘you’ love plants but plant-owners more. It is devastating to have a plant you are nurturing facing death or die! Thanks for all the people who give such detailed advice.

Answered by
GKH_Susan on
August 9, 2019
Certified Expert
A.

We don't recommend product brands. You can ask friends for a recommendation or try different ones to see what works best for you.
You also can make your own:
Use a natural soap product without synthetic additives or perfumes, which can be found in local natural food stores. Combine one heavy tablespoon of liquid soap to one quart of warm water. Tap water is okay to use, but if you have hard water you may want to substitute bottled water to avoid any soap scum buildup on foliage.

Read more at Gardening Know How: What Is Horticultural Soap: Information On Commercial and Homemade Soap Spray For Plants https://www.gardeningknowhow.com/plant-problems/pests/pesticides/homemade-soap-spray.htm

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Asked by
Anonymous on
October 13, 2019

Q. Once a Christmas cactus has begun to have buds can I put it in a cool dark place for 6 to 8 weeks?

This cactus is several years old and has flowered multiple times during the year. It summers outdoors in partial shade. We heat with wood and I want to protect it from too much heat.

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