Unpack bare roots or rhizomes on arrival and plant them within a week. Until then, keep them somewhere cool and ensure the roots remain slightly moist, never wet.
Out of season
Indeed, Geranium 'Plenum' is a double-flowered cranesbill! Cranesbill geraniums are loved for their resilience, tolerance to many conditions, hardiness and long flowering period. The only difference with this unique variety is that it has extra petals and flower power! The vivid purple ruffly blooms of double Geranium 'Plenum' will delight the eye when they burst into action in late spring, sat on their soft green cushion of foliage. Over the years, enjoy more and more from this plan t as it gradually spreads to pad out its space in the border.
Geranium himalayense 'Plenum' really isn't fussy, but given the choice it would love to grow in a space which has some light shade for part of the day. Soil type is not a problem for this double-flowered geranium, as it will usually anchor itself into all types including sandy, clay, loam or chalky soils. It finished flowering in mid summer, at which point you can cut it back completely and fresh new foliage will soon appear. In a good year (long summer) you might be treated to a second flush before autumn!
Quantity
Plant profile
Plant calendar
Remove the packaging straight away, check the compost and water thoroughly if dry. Check the plant’s hardiness before placing it outdoors. Plant into a border or permanent container within a month, choosing the position recommended for the variety. Keep the top of the root ball level with the surrounding soil, firm gently and water well.
Soak the roots in water for three to six hours immediately before planting. Keep any crown, buds or emerging shoots above the water where possible.
Pot most bare roots into 15–20cm pots filled with peat-free multipurpose compost. Large or depth-sensitive roots, including peonies, are often best planted directly into borders.
Arrange the roots naturally without bending them. Cover the roots completely, positioning the crown and buds at the depth recommended for that particular perennial.
Keep pots in a sheltered outdoor position and water whenever the compost begins to dry. Grow on until roots hold the compost together when lifted from the pot.
Plant into a suitable border or permanent container once well rooted. Add a label and water regularly throughout the first growing season while the perennial establishes.
- Botanical name
- Geranium himalayense 'Plenum'
- Flower colour
- Purple
- Established height
- 20-30cm
- Established spread
- 20-30cm
- Growing skill
- Easy to grow
- Habit
-
Spreading
Upright - Hardiness
- Fully hardy
- Leaf colour
- Green
- Mouse resistant
- Yes
- Plant size
- 1
- Plant spacing
- 7 plants per m2
- Pollinator friendly
- Yes
- Position
-
Sheltered
Exposed - Rabbit resistant
- No
- RHS Award (AGM)
- Yes
- Scented
- No
- Soil acidity
- Any
- Soil moisture
-
Free draining
Dry - Soil type
-
Loam
Sandy
Clay
Multipurpose compost
Loam-based compost - Suitable for
-
Pots
Borders
Gravel gardens
Cottage gardens
Wildlife gardens
Large containers
Coastal gardens
Low maintenance gardens - Sunlight
-
Full sun
Partial shade - Toxicity
- No report
- Years to establish
- 1-2 years
Perfect for pots
Pollinator-friendly
Perennial
Fully hardy
Packed peat-free
Drought tolerant
Low maintenance
Attracts wildlife
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Geranium 'Plenum' reviews
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