How big of pot does a 11" crown of thorns need ??
Choose a pot with drainage holes and that fits the root ball with just a bit more room. No more then 1 inch around the root ball.
have had the plant for years always have trouble getting it to bloom now the plant has yellow spots all over all the leaves. It is almost 4 ft. tall. What is wrong. ( I have 8 more cr. of thorns but they all have smaller leaves, this one has large leaves0 what is the difference?
Newer cultivators have larger leaves then older varieties.
Crown of Thorns are susceptible to fungus issues. You can use a fungicide on the plants.
Bacterial leaf spot can also be found on these plants. The disease is characterized by circular gray to brown leaf
spots surrounded by distinct yellow halos. The infected leaves often turn
yellow and fall off the plants. Leafs should be removed from the plant and disposed of. Make sure the plants have adequate air circulation.
Avoid getting water on the leaves and stems.
I am getting white scales on my plants and wondering what these are? I have sprayed with a fungicide which is a fungicide insecticide and miticide in all 3. If this is correct how often should i treat the plants? Thanks you. Glen
This looks like Mealybug.
Treat with Neem Oil.
We have recently planted crown of thorns in our back yard. When planted the leaves had dark spots and leaves turned dark, several leaves had holes and many leaves turned yellow. This was happening before I have sprayed twice a 3 in 1 product twice but did not help. Hope you can help. Thanks Rleepat@aol.com
This appears to be something of a fungal issue, and more than likely a pH issue, also. Apply wettable sulphur to the soil, to control the fungus. Add dolomitic lime to the soil to correct the pH. Here is an article for more information on the plant: https://www.gardeningknowhow.com/houseplants/crown-of-thorns/growing-crown-of-thorns-outdoors.htm
I am a snowbird, but when I came to fFlorida in end of July , my large pots of crown of thorns were doing well, but now after my return in Nov. they were dry, had white spots on leaves, and some leaves are blackish. What can I do?
This sounds like a fungal issue. This can be caused by the soil remaining wet for too long. Usually, this can be corrected with something as simple as wettable sulfur. This will take care of the infection rather quickly. The old growth will not recover, but new growth will come out unaffected. Just be careful when cutting off any dead growth, as these plants can cause some painful irritation to some.
Here is an article for the care of these plants: https://www.gardeningknowhow.com/houseplants/crown-of-thorns/crown-of-thorns-houseplant.htm
My Crown of Thorns got zapped by a freeze we had. It is a 4 foot tall plant. One short section made it fine, the rest of the leaves are droopy and look bad. How should I nurse it back to life?
The only thing you can do is let those leaves fall off, and bring it in to recover on its own. If ,after a few months, it starts to put out growth again, you may give it some fertilizer to help it come back. You don't want to do this until you know it is on its way to recovery, though.
This article will refresh you on the care needs of this plant: https://www.gardeningknowhow.com/houseplants/crown-of-thorns/crown-of-thorns-houseplant.htm
Can you prune a crown of thorns? Mine is sticking out all over and is unruly at times. It is quite a large plant. Thank you
Yes, you can prune a crown of thorns by removing up to 1/2 of the plant's total size at once. You can prune individual branches back, optimally to where a lateral branch emerges or where you see a bud so that the plant will regrow from that point. You can also remove whole braches if the plant is too dense. Wear gloves while pruning your crown of thorns, because it contains irritating, toxic sap.