Agave 'Blue Glow'

RHS Plant Profile

agave 'Blue Glow'

RHS

Synonyms

Agave 'Shaka Zulu', Agave attenuata 'Blue Glow'

Cactus Succulent Conservatory Greenhouse

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A slow-growing cultivar that forms rosettes of blue-green, chalky leaves. These have small, toothed margins, finely-edged with a line of yellow and red. Plants will take over 10 years to flower. Then they will die, without forming offsets. Height to 60cm, spread to 90cm

Position

Full sun

Soil Types

Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity: 10–20 years
Max Spread: 0.5-1 metres
Max Height: 0.5-1 metres

Growing Conditions

Loam Sand

Moisture: Well–drained
pH: Acid or Neutral

Position

Full sun

Aspect: South–facing or West–facing or East–facing
Exposure: Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

H1A: under glass all year (>15C)
H1B: can be grown outside in the summer (10 - 15)
H1C: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20): H1C

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Asparagaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Clump forming
Potentially harmful: Skin irritant. Wear gloves and other protective equipment when handling. Pets (dogs, cats): harmful if eaten. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus: Agave can be perennial or monocarpic succulents, forming rosettes of usually rigid, fleshy, spiny-edged leaves, with funnel-shaped flowers in racemes or panicles often much taller than the rosettes
Name Status: Accepted

How to Grow

Cultivation

Grow under glass in a standard cactus compost, in bright, filtered light. When in growth water moderately and feed every two or three weeks with a balanced liquid feed. Keep almost dry in the winter. See houseplant cacti and succulent cultivation for more advice

Propagation

This selection does not produce offsets and seed-raised plants will vary

Suggested planting locations and garden types

City and courtyard gardens
Coastal
Patio and container plants
Architectural
Mediterranean climate plants

Pruning

No pruning required

Pests

May be susceptible to scale insects

Diseases

Generally disease-free