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Harlequins Gardens

Harlequins Gardens

Boulder's specialist in well-adapted plants

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Home | Blog | Houseplants: Winter Care Tips

Houseplants: Winter Care Tips

December 8, 2025

Are you ready to add new plants to your indoor garden this season? Our selection is excellent, with plants to suit a variety of light conditions. Did you know that winter is the dormant season for most of the non-blooming tropical plants that we grow as houseplants? We’ve assembled some tips to help them thrive in our dry indoor conditions.

Water and Moisture Essentials:

Tropical houseplants need humidity. Instead of misting them with water, which can create conditions that lead to fungal disease, place plants on a tray lined with pebbles, and maintain the water level just under the top of the pebbles. A great, humidity-rich microclimate! If you use humidifiers, you are all set!

Water regularly, but much less than in the summer (remember, the plants are dormant now). Use this time-tested method: Each week, put your finger an inch into the soil, and only water when the top layer is dry!

Sun and Temperature Tips:

There’s less solar access in winter, with fewer hours of sunlight, and though with the sun lower in the sky, some windows or rooms will receive more direct light, it will be weaker. Check your individual plant’s needs – some can adapt to lower light, but some struggle. Consider adding a grow-light if needed.  Observe the winter light in your home and move sun-loving plants to the sunniest spots, and closer to windows.

But, check for cold drafts, which can injure plants! Make sure plants are not right up against freezing-cold windows.

Winter Pest Control:

Check top and bottom of leaves weekly for evidence of the many different insects that thrive in warm, dry environments. You might find a sticky substance (often aphids or scale), small webs (usually spider mites), or leaf damage. If so, treat with appropriate organic, non-toxic products.

Fertilizer:

No need to fertilize in winter, as the plants are dormant!

Categories: Blog, OLD-Archive

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We do not ship plants!

Our plants are for sale ONLY at our Boulder location. We DO NOT ship plants or any other products. Come visit us!

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Contact Us

303-939-9403 (Retail)
staff@harlequinsgardens.com
720-534-9063 (Wholesale)
wholesale@harlequinsgardens.com

WE DO NOT SHIP PLANTS — Our plants are for sale only at our Boulder location. We do not ship plants or any other products. Come visit us!

Sign-up for E-Newsletters!

Sign-up HERE for our weekly e-newsletter to receive ecological insights, Colorado gardening tips, and to keep up on happenings at Harlequin’s Gardens. We never share customer’s addresses!

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4795 N 26th Street, Boulder, CO 80301

Our Hours

Mondays, CLOSED

JANUARY-FEBRUARY:
Friday-Saturday, 10AM-4PM

MARCH:
Thursday-Sunday, 9AM-5PM

APRIL-SEPTEMBER:
Tuesday-Sunday, 9AM-5PM

OCTOBER:
Thursday-Sunday, 9AM-5PM

NOVEMBER-DECEMBER:
Friday-Saturday, 10AM-4PM

The plants we grow are organically grown. All the plants we sell are free of bee-killing neonicotinoid pesticides.