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Dasylirion serratifolium, commonly known as the Tooth-leaved Desert Spoon, is an eye-catching architectural plant native to arid regions of Mexico. Closely related to agaves and nolinas, it is valued for its striking spherical rosette of narrow, toothed leaves and its exceptional drought tolerance.
This plant is increasingly popular in modern, Mediterranean, gravel or dry gardens, where its dramatic texture and structural form make it an outstanding focal point.
Foliage: Forms a dense rosette of long, slender, bright green to blue-green leaves, each up to 1 metre long, edged with small, evenly spaced serrations that catch the light beautifully. The leaf tips may curl slightly with age, adding to its textural interest.
Trunk: Over many years, it develops a stout woody trunk up to 1 metre tall, slowly elevating the rosette above ground level.
Flowers: Mature specimens (after many years) produce towering flower spikes up to 34 metres high, densely packed with small cream-coloured flowers, attracting bees and other pollinators.
Growth: Very slow-growing and long-lived, perfect for adding permanence and structure to planting schemes.
Because of its rugged yet elegant appearance, Dasylirion serratifolium pairs beautifully with succulents, gravel mulches and other drought-tolerant plants.
Requires full sun to develop its best form and maintain compact, upright growth.
Ideally placed in an open, exposed spot where its dramatic rosette can be appreciated from all angles.
Hardy down to approximately -8C to -10C in well-drained soil, making it one of the more cold-tolerant desert plants.
In colder, wetter regions, it benefits from some winter protection (e.g. fleece wraps or rain shelters).
Extremely drought tolerant once established.
During the first couple of years after planting, water occasionally to help establish roots.
Once settled, needs only minimal watering, even during dry spells. Overwatering is the most common cause of failure.
Absolutely must have excellent drainage.
Prefers sandy, gritty or rocky soils. Avoid heavy clay or poorly drained sites.
If planting in less-than-ideal soil, create a raised bed or mound to improve drainage.
Generally needs no feeding in open ground.
In containers or very poor soils, a light feed with a low-nitrogen, slow-release fertiliser in spring can be helpful.
Virtually maintenance-free.
Remove any dead or damaged leaves at the base to maintain its neat form.
Suitable for large containers, provided they have ample drainage holes.
Use a cactus or succulent compost, or mix regular compost with at least 50% grit or perlite.
Raise pots on feet to ensure water flows freely out.
Generally pest- and disease-free.
Problems typically arise from poor drainage or overly wet conditions in winter.