How to Overwinter Nemesia Flowers

01.09.2023 - 16:10 / gardenerspath.com / Lorna Kring

How to Overwinter Nemesia Flowers

Nemesias are charming bedding plants. Half-hardy perennials often grown as annuals in temperate regions, they die off in cold weather but can overwinter in the right conditions.

Hardy only in USDA Zones 9 to 10, in frost-free regions they can be left in the ground as tender perennials, going dormant in cold weather and resuming growth in spring.

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In Zones 8 and lower, nemesia plants are usually discarded at the end of the growing season when cold temperatures kill them off – but potted ones can easily survive for another growing season if given a frost-free environment.

And who doesn’t love an abundance of their cheery, snapdragon-like flowers nodding in a breeze?

Read more about basic nemesia cultivation in our guide. Here, we’ll focus on extending your enjoyment of these beautiful blooms.

Are you ready to get another growing season (and more!) from this frost-tender perennial? Then let’s uncover what’s needed for nemesia winter care.

Here’s what you’ll find ahead:

Nemesiais a genus of tender perennials native to sandy coastal regions and grasslands of South Africa.

Popular species such as N. strumosa and N. caerulea form low-growing mounds of small, orchid-like flowers that bloom until frost in beautiful variations of blue, maroon, mauve, orange, pink, purple, scarlet, white, and yellow, plus bicolors.

They grow 12 to 24 inches tall with a spread of 12 to 18 inches and are most vigorous in the cooler temperatures of spring and fall – their ideal daytime temperature is 70°F with cooler overnight temperatures.

In areas with hot summers, growth can lag in hot