Bring Plants Inside Timing

I used to wait too long every fall because the days still felt warm. Then a cool night in the upper 40s left my basil and pothos sulking on the porch. Learning when to bring plants inside for fall became much easier once I focused on night temperatures, not just sunny afternoons.

When to Bring Plants Inside for Fall: Temperature Limits for Common Plants

For tender houseplants and many herbs, nighttime temperature is the real trigger. I use the USDA hardiness zone map for climate context, University of Minnesota Extension’s guidance on moving houseplants outdoors in reverse for seasonal transition logic, and the RHS houseplant resources for plant-care basics after the move.

My general fall temperature rule

I start bringing tropical houseplants in when nights begin approaching 50 to 55°F regularly. Truly heat-loving plants come in even sooner. Herbs and tougher patio plants can sometimes stay out longer, but I do not gamble with tender foliage.

Plants I bring in first

• Pothos and philodendrons
• Peace lilies
• Calatheas
• Basil
• Succulents that hate cold wet nights

What I do before they come inside

I inspect for pests, rinse foliage, check the soil, and quarantine new arrivals from the rest of the indoor collection for a while. If pests are common in your outdoor-to-indoor transition, see aphids on indoor plants and mealybugs on plants.

Why timing matters

Cold shock, pest hitchhikers, and sudden low light all get worse if I wait until after the first rough night. A calm, early move indoors is much easier for the plant than a last-minute rescue.

Common Mistakes

• Waiting for the first frost warning instead of watching night temps
• Bringing plants in without pest checks
• Moving from full outdoor sun to a dark indoor corner instantly
• Ignoring the soil condition before bringing plants in
• Crowding fresh arrivals next to indoor plants immediately
• Forgetting to clean pots and saucers

Quick Reference Care Table

FAQ

Can plants be damaged even if there is no frost?

Yes. Many tropicals dislike cool nights long before frost arrives.

Should I repot plants before bringing them inside?

Only if truly necessary. I prefer minimizing stress during the transition.

How long should I quarantine outdoor plants indoors?

I like at least a couple of weeks if possible, especially if I saw any insects outside.

Knowing when to bring plants inside for fall is mostly about respecting nighttime temperature and pest risk. Tell me your plant type and recent night temps in the comments below, and I’ll tell you whether I would move it now or wait a little longer.