Hydrangea aspera subsp. sargentiana
Sargent's hydrangea, Rough leaved hydrangea
Also known as Hydrangea sargentiana
- Height × spread
- 4m × 3m
- Position
- Full sun
- Hardiness
- Cold to -15C (RHS H5)
- Flowers
- Summer, Autumn
Availability
Generally available in late Spring & Summer
Many plants are seasonal. Call 01234 567890 to check current stock.
About this plant
This is a sumptuous hydrangea that attracts because of its beautiful foliage as well as its flowers. The leaves can be 25cm (10in) in length, coloured a matt mid green, with a rough grating texture on the hand. They often likened to the foliage of large rhododendrons in their visual impact. The flowers come in June and July and are domed with bluish mauve tiny fertile flowers at the centre and greenish white to white infertile ones starry the edge. These are held on long stalks (pedicels). The shrub can look lanky and gaunt and can also look magnificent as it luxuriates in a well chosen spot. The spot does need to be quite large of course! This is best in a site that is sheltered from the sun at the height of day. It enjoys deep rich soil that is well drained but always has moisture in it. This plant will stand around 4m (13ft) in height with a spread of 3m (10ft) or more.
- Flower colour
- Blue, Lilac, Purple
- Foliage colour
- Green
- Variegated
- No
- Scent
- No
- Shape
- Bell
- Height
- 4m
- Spread
- 3m
- Season of interest
- Summer
- Flowers in
- Summer, Autumn
- Evergreen
- Deciduous
- Garden style
- Seaside garden
- Sun or shade
- Likes full sun, likes part shade, likes light shade
- Soil type
- Loam (normal)
- Soil pH
- All types
- Drainage
- Moisture retentive soil, Damp and wet soil
- Hardiness
- Cold to -15C (RHS H5)
- Borders & containers
- Borders
- Use for
- Wall cover, Architectural, Deer resistant, Rabbit resistant, Sensory garden (tactile)
- Walls
- North, West facing
- Deer
- Protect from deer when young if in vulnerable area
- Maintenance
- Easycare – low/no maintenance
- Hazards
- Yes, potentially harmful; Humans: Skin allergen
Spring
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.
Summer
Summer - early · Outdoors
Apply slow release fertiliser
Apply a slow release fertiliser which is spread around the root area of the plants soon after they have come 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.
Planting & general
Outdoor planting · Planting
Add root growth stimulant to the planting hole
Mycorrhizal fungi helps roots establish quickly, so they absorb water and nutrients more efficiently. It comes as a powder, granule or gel. Add to the planting hole or container, and to the plant's rootball before planting in the hole. For "bareroot" plants use a gel.
Found in
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