Botanic Garden >> Gardening > >> Question and Answer >> Plant Species >> Cactus

Grafted Cactus (Moon Cactus) Decline

Why the Base of a Grafted Cactus Turns Yellow

A 15-month-old grafted cactus (red scion on green base) shows yellowing, weakening base. Scion looks good.

Explanation

These grafts (often Gymnocalycium scion on Hylocereus base) are novelty plants with a 1–2 year lifespan. The colorful scion lacks chlorophyll and drains the base. Eventually the base exhausts and both die.

Options

Accept the cycle; buy a new healthy plant.
Attempt re-grafting the scion onto a fresh base (difficult for colored scions).
Enjoy while it lasts; no care error caused this.

Cactus: Moving and Repotting a Prickly Pear Type Cactus; Stabilizing a Leaning Heirloom Columnar Cactus; Transplanting a 30-Year Blooming Zygocactus (Christmas Cactus); Grafted Cactus Host Cutting: Greg Refers to Grafting Expert Site; Rotting Barrel Cactus: Low Survival Odds; Grafted Cactus Basal Rot: Top Scion Likely Lost Too; Neoraimondia herzogiana: Natural Woody Trunk Formation Is Healthy; Tall Cactus Basal Rot: Thin Species = Cut and Root, Fat Species = Lost; Euphorbia Cold Damage: Fast Rot Spread, Basal Damage = Likely Loss; Micropropagation & Mother Plant Preparation: The Science of Clonal Plant Production

Garden Articles

Ornamental Cactus Crown Rot: Surgical Removal and Cultural Correction

Identifying and Caring for Kalanchoe Daigremontiana: The Mother of Thousands

Diagnosing Drooping in Mature Cactus: Rot Detection and Management

Yellowing Arms Indicate Mother Plant Problem

Treating White Fungus-Like Growth on a Paddle Cactus

Top-Down Cactus Rot: Frost vs. Root Death, Euphorbia Exception

Cactus Plants: Low-Maintenance Succulents for Dry Indoor Air

Plants

Yellowing Base on a Mexican Fencepost Cactus (Pachycereus marginatus)

Managing a Deep Crack in a Pseudopilocereus Cactus After Shipping

Bathroom Humidity Kills Tall Cactus: Salvage What You Can

Saving a Rotting Euphorbia: Cutting, Callousing, and Re-rooting Healthy Tops

Rescuing Euphorbia Cuttings from a Collapsed Plant

Euphorbia trigona Decline After Repotting: Root Disturbance Recovery

Orange Top Cactus (Grafted) Shriveling, Yellow Mushy Base: Dead, Top Won't Survive Alone