Skip to content
FloraVista

City guide · Zone 9b

What to plant in Houston, Texas

A full-sun bed in Houston: Dwarf yaupon holly 'Nana', Lilyturf 'Big Blue', African iris, Mexican bush sage, Daylily 'Stella de Oro'. Zone 9b, last frost around Feb 10.

Gulf heat and humidity with heavy downpours, so drainage matters. Choose plants that take both wet spells and long heat.

Preview: plant data is awaiting horticulturist review. A professional horticulturist hasn't reviewed our plant table yet. Lists still follow fixed rules for zone, sun, pets, deer and invasive status.

Houston, Texas at a glance

Hardiness zone (2023 USDA)
9b (ZIP 77002)
Typical last spring frost
Feb 10
Typical first fall frost
Dec 10
Spring planting window
late February to mid-April
Fall planting window
late October to mid-December
Annual rainfall (approx.)
50 in

Frost dates are typical metro values, not forecasts. Long, hot summers with drought and sudden downpours rule out many plants that the zone map says will survive. Our lists for Houston use the rules for Texas and the South-Central states.

Zone: USDA Plant Hardiness Zone Map, 2023 (USDA Agricultural Research Service; data by the PRISM Climate Group, Oregon State University). ZIP code to state data: GeoNames (geonames.org), CC BY 4.0.

A full-sun bed in Houston

6 or more hours of direct summer sun, 12 × 6 ft.

12 × 6 ft · Zone 9b · 6+ hours of sun · Modern

Kinds

5

Plants

18

Coverage

84%

Mulch

9 bags

Mulch: 0.67 cu yd at 3 in deep (9 bags of 2 cu ft). Plants cover about 84% of the 72 sq ft bed when mature.

A part-shade bed in Houston

2 to 4 hours of direct summer sun, 12 × 6 ft.

12 × 6 ft · Zone 9b · 2–4 hours of sun · Classic

Kinds

5

Plants

31

Coverage

85%

Mulch

9 bags

Mulch: 0.67 cu yd at 3 in deep (9 bags of 2 cu ft). Plants cover about 85% of the 72 sq ft bed when mature.

A shady bed in Houston

Under 2 hours of direct summer sun, 12 × 6 ft.

12 × 6 ft · Zone 9b · Under 2 hours of sun · Classic

Kinds

5

Plants

23

Coverage

91%

Mulch

9 bags

Mulch: 0.67 cu yd at 3 in deep (9 bags of 2 cu ft). Plants cover about 91% of the 72 sq ft bed when mature.

Guides for zone 9

Questions and answers

What hardiness zone is Houston, Texas in?
Central Houston (ZIP 77002) is in zone 9b on the 2023 USDA map: the coldest night of an average winter falls between 25°F and 30°F. Suburbs can be half a zone colder.
When is the last frost in Houston?
Typically around Feb 10 in spring and Dec 10 in fall. These are typical dates; any one year can be two weeks earlier or later.
When should I plant shrubs and perennials in Houston?
In spring, late February to mid-April; in fall, late October to mid-December. Fall planting gives roots a cool, moist season to settle before summer.
How many plants do I need for a 12 × 6 ft bed in Houston?
Our full-sun bed list for Houston uses 18 plants of 5 kinds, plus 9 bags of mulch.

How this page was made

This page was generated from FloraVista's plant table by fixed rules: the rules engine composed each list for the city's 2023 USDA zone, its region's summers and its state's invasive lists. The frost dates and rainfall are approximate metro values. No person or chat model chose these plants, and no named expert has reviewed this page.

Data status: the plant table is awaiting review by a horticulturist. Check each plant with a local nursery or extension office before you buy.

Sources

  • Missouri Botanical Garden Plant Finder, state extension services and the USDA PLANTS database (zones, size, sun, water, bloom, native range)
  • ASPCA toxic and non-toxic plant lists (dog and cat toxicity)
  • Rutgers NJAES and regional extension deer-resistance ratings
  • State noxious-weed and invasive-plant lists and the Invasive Plant Atlas of the US
  • Typical US garden-centre listings (pot size and price band)
  • USDA Plant Hardiness Zone Map, 2023. Agricultural Research Service, U.S. Department of Agriculture. Data by the PRISM Climate Group, Oregon State University.
  • ZIP code to state data: GeoNames (geonames.org), licensed under CC BY 4.0.

Generated . How FloraVista chooses plants