Zone 9 · winter lows 20°F to 30°F

Foundation Plants for Zone 9

661 foundation plants that are hardy through Zone 9, ranked by how many gardeners actually save and grow them.

661 plantsLast frost ~late FebruaryFirst frost ~early December

Most-saved foundation plants for Zone 9

#1 most saved

Incrediball Hydrangea

Hydrangea arborescens 'Incrediball'

Zones 4–9· 339 saves· from $21

#2 most saved

Plum Rosy False Indigo

Baptisia x hybrida 'Plum Rosy'

Zones 4–9· 290 saves· from $20

#3 most saved

Bicolor Butterfly Bush

Buddleja davidii 'Bicolor'

Zones 5–9· 289 saves

Flutterbye Rose

Rosa x hybrida 'Flutterbye'

Zones 5–10· 273 saves

In Your Eyes Rose

Rosa x hybrida 'In Your Eyes'

Zones 5–10· 226 saves· from $75

Twilight Zone Rose

Rosa x grandiflora 'Twilight Zone'

Zones 5–10· 158 saves· from $100

Bloomstruck Hydrangea

Hydrangea macrophylla 'Bloomstruck'

Zones 4–9· 155 saves· from $23

Fun in the Sun Rose

Rosa x hybrida 'Fun in the Sun'

Zones 5–10· 155 saves· from $80

All Summer Beauty Hydrangea

Hydrangea macrophylla 'All Summer Beauty'

Zones 5–9· 153 saves· from $12

Green Mountain Boxwood

Buxus sempervirens 'Green Mountain'

Zones 4–9· 152 saves· from $19

Blue Spire Russian Sage

Perovskia atriplicifolia 'Blue Spire'

Zones 4–9· 146 saves

Grand Cascade Butterfly Bush

Buddleia davidii 'Grand Cascade'

Zones 5–10· 139 saves· from $30

Double Knock Out Rose

Rosa x hybrida 'Double Knock Out'

Zones 5–10· 139 saves· from $24

Invincibelle Spirit II Hydrangea

Hydrangea arborescens 'Invincibelle Spirit II'

Zones 4–9· 138 saves· from $20

Ruby Slippers Oakleaf Hydrangea

Hydrangea arborescens 'Ruby Slippers'

Zones 5–9· 137 saves· from $15

Oakleaf Hydrangea

Hydrangea quercifolia 'Gatsby Gal'

Zones 5–9· 121 saves· from $25

Butterfly Bush

Buddleja davidii 'Butterfly Haven'

Zones 5–9· 120 saves

Pugster Blue Butterfly Bush

Buddleia davidii 'Pugster Blue'

Zones 4–9· 118 saves· from $19

Invincibelle Limetta Hydrangea

Hydrangea arborescens 'Invincibelle Limetta'

Zones 4–9· 115 saves· from $20

Butterfly Bush Attraction

Buddleia davidii 'Attraction'

Zones 5–10· 112 saves

Butterfly Bush

Buddleja davidii 'Hot Raspberry'

Zones 5–9· 112 saves· from $10

Dappled Willow

Salix integra 'Hakuro-nishiki'

Zones 4–9· 109 saves· from $25

Butterfly Bush Empire Blue

Buddleia davidii 'Empire Blue'

Zones 5–9· 108 saves

Grand Cascade Butterfly Bush

Buddleja davidii 'Grand Cascade'

Zones 5–10· 107 saves

Showing the 24 most-saved of 661. See all foundation plants →

Foundation Plants in Zone 9

What are the best foundation plants for Zone 9?

The 24 above are the most-saved foundation plants that are also rated hardy through Zone 9. Ranking by real gardeners — not by catalog marketing — surfaces the ones gardeners keep coming back to.

Will these survive Zone 9 winters?

Every plant listed here is rated for Zone 9, where winter lows reach 20°F to 30°F. Site conditions still matter: drainage, wind exposure, and a good layer of mulch make the difference between a rated-hardy plant and a happy one.

How far from the house should foundation shrubs go?

Half the shrub’s mature width plus a foot — typically 2.5–4 feet out. Planting tight to the wall is the #1 foundation mistake; it costs air circulation now and siding later.

Keep exploring

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Foundation Plants in other zones

Other Zone 9 collections

Design a Zone 9 bed with these

Snap a photo of your yard and Sow places these plants in it — correctly sized, matched to your zone, with care reminders that follow your real weather.