Watering schedule generator by plant type and zone

USDA hardiness zone -- Select -- Zone 3 Zone 4 Zone 5 Zone 6 Zone 7 Zone 8 Zone 9 Zone 10 Plant or planting type -- Select -- Established perennials (year 2+) Newly planted perennials (first year) Established shrubs (year 3+) Newly planted shrubs (first 2 years) Established trees (year 3+) Newly planted trees (first 2 years) Vegetable bed (in-ground) Container vegetables Container annuals Cool-season lawn (KBG, fescue, rye) Warm-season lawn (bermuda, zoysia, St. Augustine) Hanging basket Drought-tolerant perennials (lavender, Russian sage, sedum) Soil type Loam (the standard) Sandy (drains fast, dries out fast) Clay (holds water, drains slowly) Container/potting mix Season Spring (cool, plants establishing) Summer peak (hot, max water demand) Fall (cool, plants slowing) Dormant season (winter) Generate schedule

The principles that actually matter

Deep and infrequent beats shallow and frequent. A deep soaking once or twice a week trains roots to grow down where soil stays moist longer. Daily shallow watering produces shallow root systems that die in any drought. This is the most important watering principle and most homeowners get it backward. Per Clemson HGIC, deep weekly watering is standard for established shrubs and trees in most conditions.

Water early morning, not evening. Morning watering means leaves dry by midday, which prevents most fungal diseases (powdery mildew, leaf spot, blight). Evening watering keeps foliage wet overnight - prime conditions for fungal infection.

One inch per week is the rough target for most lawns and beds in summer - from rain plus irrigation combined. A rain gauge ($5) takes the guesswork out of this. Per Penn State Extension, that's the established baseline for cool-season lawns; warm-season lawns need slightly less.

Containers are a different problem entirely. Container soil dries out 5-10x faster than in-ground. Most containers need water daily in summer, sometimes twice a day for small pots in full sun. There is no "schedule" - you check by sticking a finger 2 inches in the soil.

New plantings need their first 2 years of extra water. Per Michigan State Extension, newly planted trees and shrubs need supplemental watering for at least 2 full growing seasons while roots establish, even drought-tolerant species.