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Posted 2Y ago by @conta

Troubles after repotting

Hi guys, few days ago I repotted this flower because of the fly infestation and something is going wrong. Leaves are closing and such. I tried not to overwater after repotting, so maybe it needs more water #happyplants #dragonscalealocasia
10ft to light, direct
6” pot with drainage
Last watered 2 days ago
Every plant needs some time after repotting, because repotting is very stressful for plants. You need to water the plant EITHER just before repotting, OR just after repotting. Place your plant in a shady place, take care as you usually do, and wait. The plant will bounce back after a few weeks.
Good luck. πŸ’šπŸŒΏ
Alocasia are prone to pest so check the back side of the leaves and make sure you don’t have any. Also they need bright indirect light I see yours is 10 feet away from light which is too far.
Was it small black flying insects? If yes, then it was fungus gnats.It's hard to kill them, and their larvae eat small roots of plants, making damage. This could be the problem.
@SvelteKingfern it might be them :(
I agree with @SvelteKingfern. However, there is an area of concern for me in the first picture. See that area brown spot with the yellow halo? This is usually indicative of a fungal infection. Do any of the other leaves have thee spots like this?
@conta Give it liquid copper fungicide. A smidge if it will help. This plant loves high humidity with very loose soil. It doesn’t like the changing of seasons as it is right now. I have had my black velvets which are very similar exhibit the same symptoms and it’ll probably abandon the leaf or you can trim it off once the yellow blackens off. I’ve let mine drop the leaf on it’s own as long as I treat it with the copper. This is somewhat not uncommon with these beauties. Just ease off the water, make sure it’s getting enough u/v light or it’s alternative, if stays warm and you spray the copper on its foliage to eradicate the fungus. It should be ok as long as you do that and watch it’s wait to expose it to any light up to four hours after the copper spray on the leaves.
It's fungus gnats.
Get 3% hydrogen peroxide from a pharmacy. Make a solution 1 part 3% hydrogen peroxide and 4 parts water.
When it's time to water the plant water it with that solution.
You will hear sizzling. That's normal. This will kill eggs and larvae of fungus gnats in the soil, but it's harmless to plants. Everytime you water the plant, water it with this solution. You may consider buying nematodes (tiny bugs eating fungus gnats, Neem oil spray (kills f. gnats on contact, or an insecticide.
The fungus gnats cycle is about 30 days. It's hard t9 kill them. You may use all the above methods together. You have to be persistent.

As to the spot on the first picture, it may be fungus, but also may be a wound from handling and stress from repotting. Smudging with copper is a good idea, I agree with @AnthuriumQueen
@SvelteKingfern I agree that it’s fungus gnats as well. The soil should be loose and this looks dense.