White Owl's Eyes not pool-friendly Absolutely — this is one

Absolutely — this is one of the best crested cacti for container growing

This staked form grows as a small upright tree rather than a sprawling shrub

Senita is slightly cold-sensitive when young

Most trees begin producing fruit within 2–3 years of planting and reach full size in 6–8 years

White Owl's Eyes not pool-friendly Absolutely — this is oneThe Prettiest White Clumping Cactus for Phoenix Container Gardens Mammillaria parkinsonii (White Owl's Eyes Cactus) is a stunning silvery white clustering cactus prized by collectors and landscape designers alike. Its dense white radial spines create an almost woolly appearance, and in spring it erupts with a crown of delicate pink flowers. This compact, easy care species thrives in the Phoenix Valley's heat and is perfect for containers, rock garden