Track sun and reflected heat

West-facing walls and pavement absorb heat all afternoon and release it after sunset. South exposures receive strong winter sun, while north sides can remain cool and shaded for months.

Observe the site in more than one season. Buildings, walls, and deciduous trees shift shade patterns, and a summer-safe location may be too dark in winter—or the reverse.

Find cold, wind, and water patterns

Cold air settles in low areas, and outlying Valley neighborhoods often freeze harder than dense urban areas. Courtyards may trap warmth, while open lots channel wind.

During rain, watch where water enters, ponds, and exits. Use runoff where plants can benefit, but keep drainage away from structures and avoid placing dryland species in chronically wet basins.

Turn observations into a plant brief

For each planting zone, record hours of sun, afternoon exposure, nearby hardscape, drainage, available width, irrigation, and likely minimum temperature. Bring that information—and photos—to the nursery.

Choose plants for the harshest recurring condition, not the nicest day of the year. Then group plants with similar water needs on the same irrigation zone.

Trusted resources

General educational information only. Site conditions and plant needs vary; consult local professionals when necessary.