The illustrated growing guide
Rose of Sharon
Hibiscus syriacus
Family Malvaceae
Est. zones 5-9
Tropical-hibiscus looks, zone-5 constitution, blooming through the August flower drought. One rule: buy sterile cultivars or weed its babies forever.
Full Sun
Low water
Moderate growth
Attracts hummingbirds
Attracts bees
From the print shop
The closest print we make
We don’t print Hibiscus syriacus. The closest we have is Hibiscus sabdariffa (“Hibiscus”) in the Tea Herbs collection — the same genus, Hibiscus, not the same species.
16 designsfrom $21.99white or black groundmatte poster, unframed
I
Overview
Will rose of sharon suit your garden, and what goes wrong.
Will it thrive where you are?
Enter your ZIP — we look up your USDA hardiness zone (2023 map) and check it against what rose of sharon actually needs.
Hardy inZones 5-9Rose of Sharon at a glance
Common rose of sharon problems
II
Growing
Light, water, soil, propagation and the season’s jobs.
How to grow rose of sharon: light, water & soil
How to plant & propagate rose of sharon
III
The year
What rose of sharon asks for, month by month.
The rose of sharon year, month by month
BloomPruneWhat each band means
- Bloom — flowers open — pollinators working, frost on blossoms is the danger.
- Prune — shape it now — cuts heal cleanly and structure is visible.
The rose of sharon year as text
- Jan quiet month
- Feb pruning
- Mar pruning
- Apr quiet month
- May quiet month
- Jun quiet month
- Jul bloom
- Aug bloom
- Sep bloom
- Oct quiet month
- Nov quiet month
- Dec quiet month
These are the species' typical months — expect them a few weeks earlier in warm zones and later in cold ones. Watch the plant, not just the calendar.
IV
Ecology & uses
What it does for the garden, and what it is grown for.
Rose of Sharon in the garden system
- Shrub layer shrub
- Nectary/insectary
What rose of sharon is grown for
✓ Not known to be toxic
Edibility, identification, and traditional-use notes here are general reference — not medical or veterinary advice, and not a claim that any plant treats or prevents anything. Medicinal ratings record how strongly a plant features in herbal tradition, nothing more. Never eat or dose a plant you have not positively identified. More on how to use this library.
V
Cultivars
Named varieties of rose of sharon, ruled as a catalogue.
Best rose of sharon varieties & cultivars
STERILE moderns only: 'Azurri Blue Satin', 'Sugar Tip', 'Purple Pillar' (narrow) — old seedy types carpet gardens with seedlings
VI
Sources & plant ID
Where the care distinctions come from, and how the plant is filed.
Research basis
Sources behind this profile
No extension citations are attached to rose of sharonyet. The care figures below come from the library's own catalogue rather than a traced primary source.
Plant ID
VII
Where to buy
Third-party nurseries — not Story Thyme Farms.
Third-party nurseries, not Story Thyme Farms. Prices are theirs.
Story Thyme Farms may earn a small commission from these links, at no cost to you — it never changes what we recommend.
VIII
Questions
Rose of Sharon questions, answered straight.
Is rose of sharon safe for kids and pets?
Rose of Sharon is commonly eaten and isn't considered toxic, but "commonly eaten" isn't a guarantee for any particular person or animal — allergies, quantity, and which part you eat all matter. Never eat a plant you haven't positively identified, and check with a vet before letting pets or livestock graze anything new.
How do you propagate rose of sharon?
Seed (stratify), cuttings, or layering.
Is rose of sharon invasive?
It can be an aggressive spreader — give it room or a barrier, and check your state's invasive-species list before planting.
IX
Elsewhere
Where rose of sharon sits in the library.
Rose
Hydrangea
Common Lilac
Forsythia