Sium sisarum
Water parsnip, Skirret
- Height × spread
- 1m × 0.8m
- Position
- Full sun
- Hardiness
- Colder than -20C (RHS H7)
Availability
Please ask in store about availability
Many plants are seasonal. Call 01234 567890 to check current stock.
About this plant
This has rounded pinnate leaves that are a light glossy-green. They put up airy sprays of domed white flowers, rather like those of a refined cow parsley, in summer. This reaches around 1m (3ft) height with 80cm (2ft 6in) spread.
- Flower colour
- White
- Foliage colour
- Green
- Variegated
- No
- Scent
- No
- Shape
- Bell
- Height
- 1m
- Spread
- 0.8m
- Season of interest
- Summer
- Evergreen
- Deciduous
- Sun or shade
- Likes full sun
- Soil type
- Chalk, Clay, Loam (normal)
- Soil pH
- All types
- Drainage
- Moisture retentive soil, Well drained soil
- Hardiness
- Colder than -20C (RHS H7)
- Borders & containers
- Borders
- Hazards
- No
Spring
Spring - late · Outdoors
Feed with slow release fertiliser
Apply a general purpose slow release fertiliser, spreading it around the root area of the plant as it is coming into growth. (Or apply a liquid feed at regular intervals throughout the growing season.)
This is a simple way to provide a nutrient boost as a single annual procedure.
Spring-Autumn · Outdoors
Water to keep the soil moist
For best results, this plant needs soil that is always moist. Water deeply and regularly as soon as soil appears dry. Even for established plants in the ground, a dry week can cause problems with some soils. Check plants in pots more often, especially in hot weather. Or install an automatic irrigation system which will do the hard work for you, even when you are away on holiday.
Without regular watering some plants never fully regain their beauty.