Collecting

The Huntington Library cactus garden, Desert Botanical Garden Phoenix, Boyce Thompson Arboretum, and five more US institutions where serious rare-cactus collectors plan a weekend visit. Addresses, current admission, and what to look for as a collector.

Grafted vs seed grown cactus: why serious collectors discount grafts, when grafting is justified, and how to spot the difference before you buy. The collector tradition, the morphology trade-off, and the secondary-market penalty that survives degrafting.