Today many
products are marketed as “indoor-outdoor.” Indoor-outdoor carpeting, slippers,
thermometers, plant stands… the list is long.
Why not add a few plants to this category?
Numerous
houseplants will thrive outdoors in summer months; be careful if you notice them
getting damaged by insects (not all houseplants are candidates for outdoor
living in summertime in Wisconsin.) Of
course, your houseplants must go through acclimation (a gradual
adjustment from indoor living to outdoor living.) I consider JUNE 1 – SEPT 1 a sensible timeline for moving plants outdoors
for their summer vacay. All your
houseplants should be placed in a shady location initially; then they can
graduate to a part-sun location if appropriate.
NOTE: Even
if your houseplants thrived in a sunny window while living indoors, a southern
or western sun exposure outdoors might be TOO INTENSE. Consider their foliage is not accustomed
to HARSH RAIN, WIND nor DIRECT/FULL SUN; some protection for your
houseplants is appropriate. Monitor your plants often to be sure each specimen
is in a happy place outdoors.
My favorite
plant that thrives outdoors each summer JUNE 1 – SEPT 1 is a 10-year-old tropical hibiscus. It handles dappled shade and produces multiple
flowers every summer. This plant hates
cool nights, so I always bring it back indoors before nights drop below 50
degrees. Even though September DAYS are warm enough to support a tropical
hibiscus, if it gets cold at night, it will likely defoliate completely and
won’t be a pleasant sight during winter!
Bring it in by SEPT 1st, and you should enjoy deep green foliage throughout
fall/winter/spring.
Outdoor
plants often will thrive INDOORS, given the correct environment.
By mid-September, my annual geraniums (genus
Pelargonium) have been transplanted to pots and placed under a grow-light
assembly.
Although some horticulturists
recommend pinching off blooms during off season, I disagree.
Let them flower and flourish all winter long;
then transplant to outdoor containers next June.
(Don’t soak roots; geraniums prefer dryer
soil so water just twice/month.)
Additional
outdoor plants that can thrive indoors are herbs like rosemary and oregano in
pots. My variegated ivy plant (Hedera helix ‘Mint Kolibri’) thrives
indoors and out (in a shady location.) A
favorite rosette-shaped succulent is in the genus Echeveria; it handles
a sunny window indoors, but outdoors this plant thrives in partial sun only.
Even an
unlikely specimen can thrive indoors and out: Carex buchananii ‘Red
Rooster’ is an ornamental grassy plant that is actually a sedge. The specimen shown in photo has been
“wintered over” for three years. By late May, I can take it back outdoors for
another summer vacation! It has tripled
in size so I might have to divide this perennial before replanting. (This plant is a perennial if you reside in
USDA zone 6 – 9, but sadly, it won’t survive our WI winters!)
When you’re
searching for “just the right plants” for your 2022 garden, consider those
varieties which might be able to join you indoors during fall and winter. It is such a pleasure to witness a few plants
blooming and thriving in your home on a blustery, snowy day!
M. Lynn
Schmid, Master Gardener
A.A.S. Landscape/Horticulture/Arboriculture