Flower spikes more than a metre long have emerged lately from several Agave attenuata plants around the Coast, where they are common in gardens both public and private.
They are so common that people walk past these plants almost without a second glance until they flower, when they produce the immense spike that draws a lot of attention.
Some agave species, including this one, are commonly called ‘century plant’, because of the time they take to flower (actually around 10 years). Once the yellowish buds have opened along the immense flower spike, the plant dies, replaced by young plants (or pups) that form around the base. Other common names include swan necked agave, in reference to the graceful curve in the flower spike.
There was a period where rock gardens featuring mainly succulents, including Agave attenuata, were particularly popular, because they were seen as low-maintenance. However, thankfully for the bee population – and those who like a bit of colour in their plantings – succulents are now more often combined with flowering plants, creating a less stark result.
Even when it’s not flowering, Agave attenuata makes a dramatic statement in a garden or large container, as it grows in a stylish rosette shape that eventually gets large. Its bold grey green leaves are fleshy and have no spikes.
The plants need well-drained soil and full sun; in the right conditions it forms large clumps. Agaves can be dug up and relocated – I’ve done this several times. The digging, and the transporting, requires a bit of muscle, persistence and a sturdy wheelbarrow.
You can also saw off one of the pups – remove a length of stem below the leaves. Let it dry in the air for a week, then plant in gritty soil in a pot, or even straight into the garden. It can take awhile to form roots – once the foliage begins to grow, you’re in business.
Snails absolutely love the juicy foliage; they hide at the base of the rosette and can cause a lot of damage. Snail bait scattered around the plant generally does the trick (I only use Tui Quash as it’s safer to use around children and pets than many other baits.)
Succulents like these generally come from hot, dry climates and frost damages the water-filled foliage, turning it black (never a good look). Having said that, recent frosts here do not seem to have had much effect on my agaves, so maybe it wasn’t hearty enough frost.
Although Agave attenuata is an outstanding and undemanding plant, mine have formed clumps so large that it’s time for a clear out. If I were a more diligent gardener, I’d have removed the ‘pups’ as they formed, but now I have a much bigger job to contend with. I suspect a handsaw and sharp spade (and partner) will be required. Wish me luck!