Planting trees, shrubs, annuals and perennials

Arizona plant climate zones
Selection, Planting, Staking
Arboriculture
Annuals and Perennials

Fertilizing annuals and perennials

Annuals and Perennials
Perennials above 6,000 ft

Pruning trees, shrubs, flowering plants

Cooperative Extension: Master Gardner Manual, Pruning
Cooperative Extension: Pruning
Pruning Shrubs
Pruning Citrus
Pruning Shrubs in the Low and Mid-Elevation Deserts in Arizona

Freeze Protection

Frost Protection
Frost Protection in low desert
Protection Citrus from cold
Protect plants when temps drop

Plant Diseases

Extension Plant Disease ID
Cotton (Texas) Root Rot
Texas Root Rot in Arizona
Backyard Gardener: Texas Root Rot
Diseases of Urban Plants in Arizona
Diseases of Citrus in Arizona
Non-Native, Invasive Plants of Arizona

Transplanting 

Cactus, Agave, Yucca and Ocotillo
Cactus
AZ Master Gardener: Transplants for the Garden