- Mature height
- 60cm to 90cm
- Mature width
- 60cm to 1m
Agave filifera, the thread agave, is a compact succulent with narrow dark green leaves marked by white bud imprints and edged with curling white filaments. The leaves pack into a dense, almost geometric rosette, and the fine threads catch the light along every margin of the plant.
It needs full sun to part shade and gritty, free-draining soil. Hardier than most agaves in this range, it takes light to moderate frost once established and grows well in Adelaide, Melbourne and the drier inland. Growth is slow, near 15 to 30 centimetres a year, and drought is never an issue.
The detail rewards close viewing, so it earns a spot beside a path, a step or a seating area rather than the back of a bed. Use it in rockeries, gravel gardens, raised planters and shallow bowls. Its small size lets it fit neatly where larger agaves simply cannot.
Frequently Asked Questions
About Thread Agave
What is a Thread Agave?
Agave filifera is a small Mexican succulent named for the white thread like fibres that peel away from its leaf margins. Narrow dark green leaves are stamped with pale bud imprints left by the way they were packed in the growing tip, and they form a dense, tightly symmetrical rosette.
How big does Thread Agave grow?
It is small, reaching about 40 to 60 centimetres in height and 50 to 70 centimetres across. Offsets appear around the base over time and slowly widen the clump. That compact size is the main reason it is chosen for rockeries, troughs and courtyard beds where space is limited.
Is it frost tolerant?
More so than most agaves sold here. Established plants take light to moderate frost and cope with the winters of Adelaide, Melbourne and much of inland New South Wales. What it will not accept is cold combined with wet soil, so plant it high, in grit, and keep winter watering to nothing.
How fast does it grow?
Slowly, at roughly 15 to 30 centimetres a year, and often less in poor soil or shade. A young plant will take several seasons to reach full size from a small container. The slow rate is an advantage in tight plantings, because the rosette holds its scale for a long time.
Where does it grow best in Australia?
It does well anywhere with a dry summer and sharp drainage, so South Australia, Victoria, southern and inland New South Wales, and Western Australia all suit it. It also grows in humid coastal Queensland provided the soil is gritty and open, although wet summers there raise the risk of crown rot.
Can it be grown in containers?
Yes, and it is well suited to shallow bowls and trough planters where the rosette can be seen from above. Use a gritty succulent mix, let it dry between waterings, and give it as much light as you can. Repot only once offsets have filled the surface, roughly every three to four years.
How do I care for Thread Agave?
Leave it largely alone. Water occasionally through summer and stop over winter. Do not remove the white marginal threads, as they are a feature of the plant rather than dead material. Pull off dried lower leaves and lift crowded offsets in spring. No pruning or regular feeding is needed.