| This
architectural plant makes a fabulous focal-point in a cool temperate
greenhouse or conservatory or even as a summer patio pot plant. It
has rosettes of thick,
spiny-margined, spine-tipped, grey-green, succulent leaves. Towards the end of the plant's life a towering
yellowish-green flower-spike of up to 8 metres appears, after which
the plant dies, leaving small side-shoots to grow on.
It is essential to wear
robust gloves when handling these plants to prevent a painful injury
from the spiny thorns. During the summer water regularly and apply a
low-nitrogen fertiliser three or four times. Reduce the frequency of
watering in autumn and do not water in winter.
The agave requires a very well-drained soil and a
sunny position. Being a monocarpic species the plant lives for a number
of years without flowering but the rosette dies once it does. However, it normally produces plenty of suckers during its life and
these take about 10 - 15 years in a warm climate, considerably
longer in colder ones, before flowering.
Seed - Surface
sow in a light position in April in a warm
greenhouse or sunny windowsill. The seed
usually germinates in 1 - 3 months (Ideally
at 20øc). Prick out the seedlings into
individual pots of well-drained soil or
cactus compost when they are large enough to
handle and grow them on in a sunny position
in the greenhouse or windowsill.
Offsets -
Potted up in free draining soil or cactus
mix at any time they are available. Keep in
a warm greenhouse until they are well
established.
Make your own
cactus mix: 1 part multi purpose
compost, one part peat substitute, one part
coarse grit, one part sharp sand. Mix thoroughly.
Increase the
growth rate of your agave by watering
frequently in summer with tomato feed.
|