• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Agave potatorum

Verschaffelt agave

AGM plants

AGM plants have been through a rigorous trial and assessment programme. They are:

  • Excellent for ordinary use in appropriate conditions
  • Available to buy
  • Of good constitution
  • Essentially stable in form & colour
  • Reasonably resistant to pests & diseases
Verschaffelt agave

© RHS

  • Other common names Verschaffelt agave
    toper's agave

  • Synonyms Agave verschaffeltii

  • Family Asparagaceae

  • 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

  • Details A. potatorum is a variable species, in terms of colour and habit, but is generally a solitary or slowly clump-forming species forming a compact and symmetrical rosette of light green to blue-grey, glaucous foliage with reddish-brown marginal spines and a larger, twisted spine at the leaf-tip. Stems are monocarpic, producing flowers and seeds only once on reaching maturity and then dying. Flower spikes can be 3-5m with light green flowers tinged with red and with red bracts

  • Plant range Mexico

Characteristics

  • Foliage Evergreen

  • Habit Bushy

  • 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)

    H2

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or West-facing

  • Exposure Sheltered

Soil

  • Sand

    Sand

  • Loam

    Loam

  • MoistureWell-drained

  • SoilSand, Loam

  • pHAcid

Size

  • Ultimate height 4-8 metres

  • Ultimate spread 0.5-1 metres

  • Time to ultimate height 10-20 years

How to grow

Cultivation Grow under glass in sharply-draining or proprietary cactus compost in full light. Water freely in summer, but allow compost to become dry in before watering again. Give a low-nitrogen feed three or four times during the growing period. Water less in autumn and keep cool and dry in winter. Can move outdoors for summer returning the plant under glass before the first frosts

Propagation Propagate by seed, or remove offsets

Suggested planting locations and garden types Drought Resistant Architectural Patio & Container Plants Sub-tropical City & Courtyard Gardens Gravel Garden Mediterranean Climate Plants

How to care

Pruning No pruning required

Pests Prone to scale insect

Diseases Generally problem free, although can be prone to root rots if grown in a wet soil

Did you find the information you were looking for?

RHS members can get exclusive individual advice from the RHS Gardening Advice team.

Join the RHS now

Get involved

We're a UK charity established to share the best in gardening. We want to enrich everyone's life through plants, and make the UK a greener and more beautiful place.