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Posted 1M ago by @PeakUngnadia21

Can anyone recognise what is happening to my plant? Start...

#Philodendron
That looks like powdery mildew 😬 most likely when plants are crowded together, if it's under watered, or if it's very hot and humid. Do some digging, and if the descriptions match your plant, you want to remove infected leaves and treat with fungicide
Looks like mealybugs? 😬 Guys, are you able to help? I haven’t dealt with mealybugs or powdery mildew, so idk @SuperbRaspfern @AnthuriumQueen @TheOddAsity
Thank you for your response. Looks like I need to get on top of this fast!
@PeakUngnadia21 I agree with @OrangeGrass that it is mealy bugs. Isopropyl alcohol kills them on contact. I would get a cotton ball wet with the alcohol and wipe the leaves down. Then you need to treat the soil as well as there’s probably larva there.
@TheOddAsity, what should I be treating the soil with?
Honestly @AmberMallow and @OrangeGrass could be right. And I'm not positive because I can't make out any mealbugs although it does look like that and I also think it may be a bad case of downy mildew.

So I'm going to share a treatment that will work for both. I want you to start with the peroxide mix.

This is what I would do.

First treat the plant for powdery mildew.

Mix 1 part peroxide + 9 parts water and spray the plant thoroughly. Dont miss anything cover every inch of plant until mixture drips off.

The powdery mildew should be nearly gone if it is that. You may need to do several treatments about 3 days about. If it is powdery mildew it's a pretty severe case. So may require several treatments. Don't worry since it is diluted it will NOT hurt your plant. Then you need to flush the soil thoroughly with

1 part peroxide + 3 parts water

Next if that doesn't do anything, it is mealybugs.

After the peroxide dries or the next day, you can spray it thoroughly with neem oil.

Neem oil will treat mealybugs. Like I said you may not need to if it is powdery mildew you will know right after spraying with peroxide mix whether it is or not.

The peroxide mix is much easier and harmless which is why I need you to start there.

If it's mealybugs the treatment will be neem oil every 3 days for 3 weeks. Or insecticidal soap I recommend Castile.

If it is mealybugs one bath with the plant submerged for 20 min and you just put the pot right in the bath with the Castile soap so soil is treated as well and it's once and done.

For the Castile soap

1 tablespoon soap + 1 gallon water.

I am also going to recommend adding some aeration to your soil. It appears as if it has none which is a big cause of root rot. I aim for 50% in all of my plants perlite is a great option. ❀️ @OrangeGrass @AmberMallow @TheOddAsity @AnthuriumQueen
@SuperbRaspfern, fantastic advice, much appreciation
@PeakUngnadia21 πŸ‘πŸ»
Isolate. Touch the white stuff. If it’s cutting and pulls like a cotton ball, it’s mealy bugs. Take it to the sink or tub and mix up some Castille soap and rubbing alcohol in a spray bottle. Spray it down . All over the leaves and stems. Let it sit 5 minutes. Spray again. Let sit 5 minutes. Rinse with warm water. Use a gentle or soft toothbrush on the foliage with regular rinsing of the brush before continuing the cleansing process. Rinse the foliage and branches with warm water. Don’t worry about drowning it since you can tip it on its side to just rinse the foliage. When you think you’ve got it all clean,give it another spray of soap mixture and rinse again. Next, pull the plant from the soil and rinse the soil off the roots. Make sure you spray the roots and check for any of the white stuff. Make sure your roots are clean. Bag the soil and trash it. Set the plant aside and soak the planter in the sink in a tub or basin of rubbing alcohol and water. Immerse the pot and clean any other parts of the pot like a stand or tray it was on. Change your clothes. Repot in fresh dry soil once you’ve sanitized the pot. Pat try the foliage and water with a little water but not much from the bottom. Keep an eye on the plant as it you keep it isolated. If you see more white spots, spray them quickly with soap and water and rubbing alcohol and then rinse just the foliage. I use a thin paint brush to wipe them off after spraying the foliage. Keep an eye on the plant for four weeks. Repeat as necessary up until two weeks after you see no sign of the problem.

If it’s powdery mildew, you’ll see blooms in the shape of radiating stars like a bloom with a point in the center. That’s a treatment that is similar to the one above except it’s baking soda and water replacing the alcohol and soak mixture. I opt to trim off the leaves if it’s powdery mildew. 🌿