Blue BarrelThe Best Blue Gray Barrel Cactus for Phoenix Rock Gardens Ferocactus glaucescens (Blue Barrel Cactus) is one of the most visually striking barrel cacti you can grow in the Phoenix Valley. Its powdery blue gray body, neat geometric ribs, and golden yellow spines create a color combination that stops people in their tracks. Native to the limestone hills of central Mexico, Blue Barrel adapts beautifully to Phoenix's heat, alkaline soils, and low

Smaller 3/5 and 10/15 gallon sizes establish quickly and are more economical for planting multiple trees

Month 1–2: Reduce to every 3–4 days

Whether you're adding color to a Scottsdale patio wall

Ornamental Specimen Tree

space 5 to 6 feet on center: a 20 foot bed takes about 4 palms

mild winters

give it room to spread its full rosette

and native bees

In spring and fall

and Dramatically Unique

Yes — all parts of Caesalpinia gilliesii contain compounds that are toxic to people and pets if ingested

Place 2–3 emitters (2 GPH each) around the drip line