Two Gorgeous Hibiscus Plants—Only One Belongs in a Cold-Winter Garden, by Home Garden Ideas on YouTube. 19 min 51 s.
- Video length
- 19 min 51 s
- Time to do it
- 20 minutes
- Difficulty
- Easy
- Steps
- 7
What you need
Steps
Read the plant tag before you look at the flowers. Check the scientific name: Hibiscus rosa-sinensis is tropical and tender, while Hibiscus moscheutos is a hardy herbaceous type.
Look past flower colour and size. Check the leaves and stems instead: tropical hibiscus is woody with glossy leaves, while hardy hibiscus dies back to the ground each winter.
Compare the cultivar's hardiness rating with your own zone. Hardy only means hardy in the listed zones, so a plant rated for zone 5 will not survive a zone 3 winter.
Plan winter for a tropical hibiscus. Move the pot indoors well before the first frost, keep it in a bright room around 10 to 15 C, and water only when the top of the soil feels dry.
Expect a hardy hibiscus to vanish. The stems die back and the plant looks dead, but the roots are alive and dormant, so do not dig it up or bin it.
Wait before declaring it dead in spring. Hardy hibiscus is often very late to emerge, so scratch a stem near the base and look for green before you give up on it.
Run the five-point checklist before you buy: plant tag, scientific name, hardiness rating, growth habit, and how the plant behaves in winter.
Tips and common mistakes
Take a photo of the plant tag when you buy, since the label often goes missing before the next winter.
A hibiscus in a pot gets much colder than one in the ground, so treat container plants as one zone colder than the label says.
Never water a dormant hardy hibiscus heavily in winter, as soggy cold soil rots the crown.
Questions
Can I keep a tropical hibiscus outside all winter?
Only in frost-free climates. Anywhere with hard frost, bring it indoors or into a heated greenhouse before the first cold night.
My hardy hibiscus shows no growth in spring. Is it dead?
Probably not. It is one of the last perennials to emerge, so wait until the soil has warmed, then check for green under the bark near the base.
Why does the tag say hardy when the plant died?
Hardy is tied to specific zones. If your winter is colder than the zone on the label, the plant is not hardy where you garden.
This guide was drafted from the video's details and general task knowledge. It has not been checked against the full video. Check the video and relevant product instructions before following a procedure. Report a correction.
