There's some white cotton like substance growing on my cactus which I had notice yesterday morning but wasn't there the night before that morning. I haven't watered the cactus since I got it last 8 days ago and I tend to keep it indoors but place it in direct sunlight for 2-3 hours everyday. Please help!
Looks like mealybug. This can be washed off with a strong spray of water. If it returns, use insecticidal soap.
