Agave americana 'Marginata' (v)

RHS Plant Profile
century plant 'Marginata'
Award of Garden Merit
Cactus Succulent Conservatory Greenhouse

A large, evergreen succulent plant forming a stiff rosette of greyish green, yellow-margined leaves. The leaves are armed with hard spines along the margins and at the tip. Mature plants may produce a tall (2m) branched spike of yellow flowers. Makes a striking patio container plant but requires winter protection

Position

Full sun

Soil Types

Loam, Sand

Max Height

1-1.5 metres

Max Spread

1-1.5 metres

Size

Time to Maturity
10–20 years
Max Spread
1-1.5 metres
Max Height
1-1.5 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
H2
Drought Resistance
Yes

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 cactus compost, water freely when in growth, but keep almost dry over winter. Apply a dilute, liquid fertiliser 3 or 4 times during the growing season. Agaves are monocarpic and the main rosette will die after producing a very tall (2m) flower spike, however new offsets are produced at the base of the old rosette. See houseplant cacti and succulent cultivation for further advice

Propagation

Propagate by removing offsets in spring or autumn

Suggested planting locations and garden types

  • City and courtyard gardens
  • Coastal
  • Gravel garden
  • Mediterranean climate plants
  • Patio and container plants
  • Bedding
  • Conservatory and greenhouse

Pruning

No pruning required

Pests

May be susceptible to scale insects

Diseases

Generally disease-free