Barrel Cactus Decline: Light Deficiency and Rot Risk in Indoor Specimen

Case: Large Barrel Cactus Yellowing and Softening 12 diameter × 14 tall barrel cactus, previously 10 years in store window, now shows basal yellowing and unilateral melting after 6 months low light (east exposure, cold w

Euphorbia erythraea Leaf Drop After Purchase

New Euphorbia erythraea Losing Leaves: Acclimation and Watering 3 weeks old; each branch had leaf crest (toilet brush). Leaves yellowed and dropped from top and bottom, now middle. Causes Normal leaf drop usually in fa

Crested Myrtillocactus Shriveling: Light and Water Fixes

Dinosaur Back Cactus Crest Shriveling Indoors in Texas 2-year-old Myrtillocactus geometrizans crest shriveling; arm (4–5) bright green and leaning. Indoors, DFW area. Issues Indoors = insufficient intense light (unless

Mushroom Growth in Aloe Pot: Harmless Fungus Identification and Removal

Mystery Growth Identification An indoor aloe plant develops strange stalked growths with rounded tops in the soil - largest ~1 inch tall with smaller clusters nearby. Diagnosis: Soil Fungus (Mushrooms) Common in organi

Identifying Hesperaloe parviflora (Not Aloe)

Red-Flowering Aloe from Amish Greenhouse: Actually Hesperaloe Plant described: darker reddish-brown, tall flower spike with red seeds/flowers, no pups yet. Central Kentucky, container. ID Hesperaloe parviflora (related

Propagating Prickly Pear from Pads

Easiest Cactus Propagation: Break Pad, Stick in Dirt Question: Can you grow new prickly pear from cuttings? Answer Yes. Break off a pad, stick in soil. Water when dry. Roots in ~1 month; fast new growth.

Removing a Large Cereus peruvianus: Value and Logistics

22-Year, 10-Foot Columnar Cactus: Worth Money? Owner wants to remove a ~10 ft, 30 ft circumference cactus with apples/flowers. Asks if it has value. Reality Likely Cereus peruvianus—common, not rare. Moving intact requ

White Wool on Golden Barrel: Normal or Pest?

White Fibrous Growth on Barrel Cactus Apex Owner sees white fibrous growth on top; asks for ID and treatment. Answer If it looks like this, its normal wool (color varies white to gold). If not, send photo to gregandkat@

Sunburned Aloe Vera Recovery

Brown Aloe After Excessive Heat: Will It Recover? Aloes left out too long, turned nasty brown. Assessment If shriveled up: probably dead. Resist overwatering; let stabilize a few days. Water only when new growth appear

Barrel Cactus Shriveling at Apex

Top-Down Shriveling on Potted Barrel Cacti Two of three barrel cacti (3 ft and slightly shorter) shriveling and blackening at top. Causes Cold damage (delayed appearance). Sunburn from sudden outdoor exposure. Overwate

Cat Urine on Cactus: Damage Control

Can Cat Pee Kill a Cactus? 4-year-old cactus dying; owner suspects cat urine. Advice Unsure about urine toxicity. Water thoroughly when soil dry. Keep out of direct sun. Try Superthrive (nursery product).

Weeding a Mature Prickly Pear Patch

Removing Red Sorrel from 16-Year Opuntia Stand Dense prickly pear patch invaded by red sorrel. Leather gloves fail against glochids. Method Water soil thoroughly (or wait for rain). Use extended grabber tool to pull we

Indoor Aloe Vera with Air Conditioning

Aloe Vera Gift: Light Matters More Than AC Temperature New aloe owner worries about cold AC. Expert says light is the real issue. Requirements 15+ hours strong indirect light or grow lamp daily. Water only when soil dr

Yellowing Golden Barrels After Record Rain

Three Golden Barrels Turn Yellowish-Green After 19 Days Rain Oklahoma owner: barrels not bright green, some brown spots. Record rain (19 days straight). Should have brought in. Advice Golden barrels sensitive to heat/s

Indoor Cacti Cooked by Arizona Sun

Windowsill Cacti Destroyed by Sudden Intense Heat Indoor cactus garden placed outside on windowsill for better sun. Unchecked for days. Now shriveled tops, bleached white color. Owner watered and brought back in. Verdic

Sunburn on Golden Barrel and Mexican Fence Post in Phoenix

New Landscape Cacti Yellowing in Extreme Heat Golden barrel and Mexican fence post planted 2 months ago in Phoenix full sun (110°F shade). Yellowing from top, now pronounced at bottom. Watered 2x, 3 weeks apart. Diagnos

Replanting a Tall Cactus Broken in Three Pieces

Broken Columnar Cactus: Replant Sections After Callousing Very tall cactus broke into thirds. Owner wants to save it. Advice Let all pieces dry 2+ weeks. Replant in same or new pot. Base piece will grow arms below brea

Euphorbia hermentiana Decline After Dog Damage

Replanting Trauma and Underwatering Suspected in Euphorbia Plant knocked over by dogs 5 months ago, replanted, never re-rooted well (sways). Now yellowing, limp, two of three stalks black and shriveled. Watered 1 cup/mon

Orange Rust Rot on Cacti in Cool Wet Climate

Orange/Rust Spots on Mammillaria and Opuntia in Tasmania Winter Winter in Tasmania (wet, cold). Orange marks on Mammillaria (no rot inside) and prickly pear (deep rot found). Owner cut out rot. Asks how to manage and if

Growing Yucca from Seed: Harvesting and Sowing Seed Pods

Propagating Yucca from Seed Pods in Eastern Iowa Yucca seed pods must fully mature and split open on the plant before harvesting. Green pods contain immature seeds that wont germinate. Step-by-Step Wait: Pods turn brown