Cristate and Monstrose Succulents: Nature's Fascinating Mutants

October brings Mutants and Monsters month—perfect for exploring the bizarre world of cristate (crested) and monstrose succulents. These mutations occur across plants but are especially common, collectible, and visually spectacular in succulents and cacti.

What Happens During Mutation?

Normal succulents grow from apical meristems—single points producing cells in radially symmetrical patterns (circular cross-sections). When a meristem mutates, a linear row of meristematic cells forms, creating growth from a line instead of a point. This cresting (fasciation) produces flattened, often curling planes of growth—ornamental waves, walls, or brain-like structures in cacti. Crested plants often retain recognizable tissue/coloration alongside normal growth. Early-life cresting yields immature, rarely flowering plants; later cresting allows normal reproduction.

Not Crests: Cephalums—genetically consistent flowering structures on mature Melocactus and Coleocephalocereus—are often mistaken for crests.

Monstrose Mutations

When mutations affect all meristematic tissue systemically, monstrose growth results—haphazard development like cancerous tumors: knobs, bumps, asymmetrical limbs, stunted columns, freakish appearance. Monstrose plants often lack normal parts, differ radically from species, and mutate early in life.

Causes

Precise causes unknown. Theories: bacterial/fungal/viral infections, phytoplasmas (proven in some species), chemical/physical trauma, pesticides, radiation, seasonal factors (temperature/humidity), nutritional deficiencies (zinc), spontaneous chromosomal aberrations. Some species crest commonly; others never do. Extreme-environment succulents crest more; humid-climate species rarely. Artificially inducing mutations is nearly impossible. Mutations rarely heritable in succulents (seeds produce normal plants), though some dicots show heritable fasciation.

Growth Rates

Crested: Initially faster (more growth points), but tissue crowding halts growth, often triggering reversion (defasciation). Collectors remove normal reversions to preserve crest.

Monstrose: Slower from day one. Some have localized monstrosity (leaves only) with near-normal size/shape.

Care Sensitivity

Generally more sensitive—abnormal tissues crack, grow too fast, or rot. Grow "harder" (less water). Grafting onto hardy rootstocks (e.g., Euphorbia canariensis) improves survival. Rootstocks often try to dominate—remove their growth promptly.

Some monstrose/crested forms are fully hardy (e.g., Crassula 'Gollum', Pachycereus schottii monstrose). If photosynthesis, stability, and water handling remain functional, mutations may not impair survival.

Gallery of Remarkable Specimens

Show-quality Aeonium crests, Echeveria agavoides crest, Senecio cylindricus crest, Agave filifera and titanota monstrose, prize-winning Ariocarpus retusa crest, crested Echinopsis, monstrose Austrocylindropuntia sublata, crested Cereus at Lotusland, crested Cephalocereus urbanianus at Huntington, monstrose Cleistocactus strausii, crested C. winterii, monstrose Opuntia basilaris, spiral Eulychnia, 'Funny Bunny' Opuntia microdasys monstrose, crested Mammillaria elongata (classic "brain cactus"), monstrose M. elongata, crested Euphorbia 'Garretson', giant E. lactea crests, E. susannae crest/monstrose/normal, E. obesa crests, common E. lambii crests, exceptional E. milii (Crown of Thorns) crest, crested E. nerifolia (often variegated), crested Luckhoffia beuneckeri (Asclepiad), crested Huernia pillansii, spontaneous Pedilanthus crest at LA Zoo, crested Yucca at show.

Further Resources

• tucson-gardener.com/graphics/Galleries/Crested/Crested.html
• sgvcss.com/communique/cotm_2003_03.pdf
• lapshin.org/cultivar/N21/jorn-e.htm
• cssnz.org/cristate-and-monstrose.php
• Bing images: "monstrose succulents"