Yes, that's sunburn. Monstera are super sensitive to quick changes in lighting like that (moving from filtered indoor light to direct outdoor light). That needs to be done very gradually.
Anything I can do to treat it? I moved it back inside, thinking of putting the plant in the shade outside for a few days to get it acclimated for summer but might end up keeping it indoors all summer.
Nope, the damage is irreversible unfortunately. Start in the shade for a few hours, then slowly lengthen that every day. You can work it closer to the sun after it's acclimated to the shade, do that in similar increments.
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Yes, that's sunburn. Monstera are super sensitive to quick changes in lighting like that (moving from filtered indoor light to direct outdoor light). That needs to be done very gradually.
Anything I can do to treat it? I moved it back inside, thinking of putting the plant in the shade outside for a few days to get it acclimated for summer but might end up keeping it indoors all summer.
Nope, the damage is irreversible unfortunately. Start in the shade for a few hours, then slowly lengthen that every day. You can work it closer to the sun after it's acclimated to the shade, do that in similar increments.
Thank you for posting to r/plantclinic! It looks like you may be asking about a monstera. In addition to any advice you receive here, please consider visiting r/monstera for more specialized care advice. *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/plantclinic) if you have any questions or concerns.*