I have a sweet potato vine plant. There are a few different things I’ve noticed. The first pic is some white crystal like structure on a couple of the leaves. The second is brown specks all over many leaves. The last is some bugs I found. Would appreciate if someone could tell me about any and all of these.
The crystals, I believe, are deposits from minerals in the water you are using that the plant is trying to expel. Try using distilled water or rain water or at the least filtered water instead. The bugs could be aphids. I would rinse the plant to wash off as many bugs as possible and then treat with insecticide and keep a close watch.
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This is common in sweet potato vines (ipomoea varieties). It’s sap from the veins that crystallizes with warm air temperatures. It maybe a form of guttation where the plant is releasing excess water and it solidifies before it can run off the leaves. The plant could be getting rid of minerals as Cherry commented. Her advice is good. Use water with less hard water deposits. I would add to keep the soil moist to but not drenched to avoid overwatering.🍀🪴
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