Ask a Question forum: Is it a disease?

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Dec 19, 2017 3:16 PM CST
I have a plant probably is cast iron plant which has recently developed this white powdery residue and the edges are turning brown. All the new leaves are opening up with brown edges. Is there anyway the plant can be revived or it is time to get rid of it.

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Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Dec 19, 2017 3:58 PM CST

Its got a terrible case of mealybugs. How much do you care for this plant? If the answer is "not that much", toss it. If the answer is "I love this plant", Sighing! its time to get to work. The best attack is commercially made Insecticidal Soap. It kills on contact and the mealybugs won't build up a resistance to it. But, you will have to spray every week and you will NEVER completely get rid of them.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

Name: Sue
SF Bay Area, CA (Zone 9b)
Container Gardener Canning and food preservation Dog Lover
Dec 19, 2017 10:38 PM CST
Agree, and if you are going to keep it, I would repot it into a terra cotta pot. I'm wondering if you're maybe overwatering it, too. And make sure it has enough light, but not direct sun.

I have a belief that the best pesticide in the world is a healthy plant. And a plant will be at it's healthiest, if it has what it needs - and not a lot more than it needs. So, too much sun, too much water, too much fertilizer is too much of a good thing :-)

The plant looks completely capable of a come-back to me, but you're going to have to be aggressive on the bug killing, then make sure it has everything it needs to be healthy so it's not a bug/disease target going forward.

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