rose of Sharon
When to plant rose of Sharon?
- Botanical name
- Hibiscus syriacus
- Family
- Malvaceae
Rose of Sharon is planted from October to March.
Rose of Sharon is a woody perennial.
Rose of Sharon through the year
JanFebMarAprMayJunJulAugSepOctNovDec
this week
Planting
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- planting
In short
Planting
from October to March
week 40 to week 13 of the next year
Spacing between plants
2.5 m
Growing conditions
🪨
Soil
loamy
☀️
Sun
full sun
💧
Water
moderate water
❄️
Frost
overwinters outdoors
📏
Height
2.4 to 3.7 m
Pests and diseases
Listed here is every problem for which the sources name this plant as a host. The problems are not listed in order of how common they are.
Honey fungus
disease- Signs
- The plant dies suddenly, often in mid season and without any decline beforehand. Peel the bark at ground level and under it there is a white or cream sheet of fungal tissue, thin as the skin of a mushroom. In the soil there are black or brown strands like bootlaces. In late summer and autumn tufts of honey brown mushrooms with a whitish ring on the stalk appear by the stumps or over dead roots.
- Prevention
- The fungus spreads through the soil with its strands, from a few centimetres to a good hand's width below the surface, and infects the roots of a living plant when it touches them. So do not leave stumps and dead roots in the ground. No plant is completely resistant, but the source names privet, lilac, viburnum, weigela, forsythia, butterfly bush, rhododendron, thuja and walnut as particularly susceptible.
- What to do
- There are no products. The only thing that works is digging out and removing every infected root and stump, which takes away the food without which the strands in the soil do not grow. A vertical barrier of rubber or thick plastic sheet, buried about half a metre deep and standing a few centimetres above ground, stops the spread into an unaffected part of the garden.
Powdery mildew
disease- Signs
- A white, floury coating spreads over the leaves, first on the lower and older ones. The leaf under it yellows and dries up. The fruit stays small, because the plant loses leaf surface.
- Prevention
- Plant resistant varieties, leave an airy spacing and sun, and clear the debris at the end of the season. Unlike most fungi it is not helped by wet foliage, since it spreads in heat and high air humidity, in a dry summer too.
Keep track of your plants with Tendask
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Sources about the plant: GBIF Backbone Taxonomy, NC State Extension Plant Toolbox, Oregon State University, Royal Horticultural Society, Wikidata. Checked between 14 and 28 August 2026. The problem descriptions also draw on: Clemson Cooperative Extension, KGZS, UF/IFAS Extension, University of Maryland Extension, University of Wisconsin-Madison Division of Extension, Utah State University Extension.