Hildmann's Cereus
Cereus hildmannianus
A striking columnar cactus whose large night-blooming flowers attract hawk moths under moonlight.
Hardy to roughly 25-28°F, USDA 9-11; best in the low desert with light frost protection in cold pockets.
AMWUA Notes
Very drought tolerant columnar cactus that thrives on minimal summer water.
Care Guide
Water deeply once or twice a month spring through fall and keep dry in winter; it tolerates neglect once established and rots if overwatered.
Minimal; remove damaged or frost-bitten stems and, if desired, cut columns to control height or propagate.
Optional light feeding with a dilute cactus fertilizer once in spring; unnecessary in decent soil.
Generally trouble-free; watch for mealybugs and scale in the ribs and treat with horticultural oil.
Tips and young growth can sunburn if suddenly relocated to full sun, and the plant may need frost protection below 28°F.
Soil, Feeding & Propagation
Gritty, fast-draining mineral soil or decomposed granite; low organic matter
Needs sharp, fast-draining soil.
Low feeder.
Stem cuttings (let cut end callus first) or seed
8-10 ft
Shallow, non-invasive roots; set the columnar mass back from walkways and structures
Placement Tips
- •Give room for the 10 ft spread and set back from walkways.
- •Site in sharp-draining soil or decomposed granite.
- •Use as a vertical night-garden accent where the evening blooms can be enjoyed.
- •Keep away from pool edges given its eventual size.
Features
Best Uses
Ecological Value
Attracts
Wildlife Value
Companion Plants
Quick Stats
Design Styles
Include in Your Project
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Use this care guide to maintain your Hildmann's Cereus. Questions about your landscape? Reach out anytime.
Data from 2024 AMWUA “Landscape Plants for the Arizona Desert” guide.