Agave lophantha (also sold as Agave univittata), commonly called the thorn-crested or centre-stripe agave, is a small to medium succulent that forms a symmetrical rosette of stiff, sword-shaped leaves. Each leaf is olive to deep green with a lighter pale-green stripe down the centre and is edged with sharp marginal teeth tipped by a stout terminal spine.
Native to the limestone hills of southern Texas and north-eastern Mexico, it is exceptionally tough and well suited to India's hot, dry plains and rocky urban terraces. It stays manageable in size, suckers freely to form clusters, and tolerates heat, drought and neglect once established.
Like all agaves it is monocarpic: an individual rosette flowers once after many years, sending up a tall spike, then dies, but is replaced by the offsets (pups) it produces around its base.
Specifications
| Family |
Asparagaceae |
| Native region |
Southern Texas (USA) and north-eastern Mexico |
| Mature height |
45-60 cm |
| Mature spread |
60-90 cm |
| Growth rate |
Slow to moderate |
| Foliage |
Evergreen; narrow stiff green leaves with a pale central stripe and toothed margins |
| Flower colour |
Greenish-yellow |
| Flower season |
Once at maturity (after many years); spring to summer |
| Climate zone |
Tropical and subtropical; suits most of India, protect from heavy monsoon waterlogging |
Care guide
| Sunlight |
Full sun to bright light; at least 5-6 hours of direct sun for tight, well-coloured rosettes |
| Watering |
Low; water only when soil is fully dry. Reduce sharply in monsoon and winter to avoid rot |
| Soil / mix |
Fast-draining gritty mix; cactus/succulent soil or garden soil amended with coarse sand and perlite |
| Temperature |
Thrives at 18-38 C; tolerates brief cold but protect from frost |
| Humidity |
Prefers low to moderate humidity; dislikes prolonged dampness |
| Fertilizer |
Light feeder; a dilute balanced or low-nitrogen feed once or twice in the growing season is enough |
| Pruning |
Minimal; remove only dried, damaged or lower spent leaves at the base |
| Repotting |
Every 2-3 years or when crowded with pups; choose a slightly larger pot with drainage holes |
| Propagation |
By offsets (pups) detached from the base; also by seed |
| Pests & problems |
Generally pest-resistant; watch for agave snout weevil, mealybugs and scale; rot from overwatering |
| Toxicity / safety |
Sap and spines can irritate skin and eyes; mildly toxic if ingested and the leaf tips can injure pets and children |
| Difficulty |
Easy |
Uses
Agave lophantha is a versatile ornamental for Indian gardens and homes:
- Striking accent or specimen plant in pots, terraces and balconies
- Rockeries, gravel gardens and xeriscape (low-water) landscapes
- Mass-planted as a tough, low-maintenance ground feature in hot, dry sites
- Architectural form for modern and minimalist garden designs
Growing tips
Plant in a gritty, free-draining mix and a pot with drainage holes; standing water is the main killer.
During the monsoon, move container plants under a covered area or shift to the driest, sunniest spot and stop watering until the soil dries out.
In summer give bright sun and occasional deep watering; in winter keep nearly dry. Wear gloves and handle by the pot, not the leaves, because of the sharp marginal teeth and terminal spine. Pot up the offsets that form around the base to grow new plants.
