Zone 6 · winter lows -10°F to 0°F

Buddleja for Zone 6

89 Buddleja varieties rated hardy through Zone 6, ranked by how many gardeners actually grow them. Zone 6 is the sweet spot — nearly everything hardy grows here.

89 hardy hereof 91 Buddleja totalLast frost ~late April

The Buddleja that thrive in Zone 6

#1 most saved

Pugster Amethyst Butterfly Bush

Buddleja davidii 'Pugster Amethyst'

Zones 5–9· 351 saves· from $19

#2 most saved

Pugster Pink Butterfly Bush

Buddleia davidii 'Pugster Pinker'

Zones 5–9· 342 saves· from $19

#3 most saved

Trio Butterfly Bush

Buddleja davidii 'Trio'

Zones 5–9· 317 saves

Bicolor Butterfly Bush

Buddleja davidii 'Bicolor'

Zones 5–9· 289 saves

Grand Cascade Butterfly Bush

Buddleia davidii 'Grand Cascade'

Zones 5–10· 139 saves· from $30

Butterfly Bush Purple Prince

Buddleia davidii 'Purple Prince'

Zones 5–10· 129 saves

Butterfly Bush

Buddleja davidii

Zones 5–9· 126 saves· from $77

Honeycomb Butterfly Bush

Buddleia davidii 'Honeycomb'

Zones 5–9· 126 saves· from $14

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

Deluxe Butterfly Bush

Buddleja davidii 'Deluxe'

Zones 5–10· 113 saves

Butterfly Bush Sky Blue

Buddleja davidii 'Sky Blue'

Zones 5–9· 113 saves

Butterfly Bush Attraction

Buddleia davidii 'Attraction'

Zones 5–10· 112 saves

Butterfly Bush

Buddleja davidii 'Hot Raspberry'

Zones 5–9· 112 saves· from $10

Butterfly Bush

Buddelia x weyeriana

Zones 5–9· 111 saves

Butterfly Bush Honeycomb

Buddleja davidii 'Honeycomb'

Zones 5–9· 109 saves

Butterfly Bush Empire Blue

Buddleia davidii 'Empire Blue'

Zones 5–9· 108 saves

Nanho Blue Butterfly Bush

Buddleia davidii 'Nanho Blue'

Zones 5–9· 107 saves

Grand Cascade Butterfly Bush

Buddleja davidii 'Grand Cascade'

Zones 5–10· 107 saves

Ellen's Blue Butterfly Bush

Buddleia davidii 'Ellen's Blue'

Zones 5–9· 105 saves· from $30

Miss Violet Butterfly Bush

Buddleja davidii 'Miss Violet'

Zones 5–9· 103 saves· from $83

Butterfly Bush

Buddleia davidii 'White Profusion'

Zones 5–9· 102 saves· from $45

Fountain Butterfly Bush

Buddleia alternifolia

Zones 5–9· 98 saves

Blue Chip Jr. Butterfly Bush

Buddleia davidii 'Blue Chip Jr'

Zones 5–9· 98 saves· from $18

Showing the 24 most-saved of 89 Zone 6–hardy Buddleja varieties. See the full Buddleja list →

Buddleja in Zone 6

Will Buddleja survive a Zone 6 winter?

89 of the 91 Buddleja varieties in the Sow catalog are rated hardy through Zone 6, where winter lows reach -10°F to 0°F. Hardiness is per-variety, not per-genus — the plants listed above are the ones that hold up; others in the genus are not rated for this zone.

When should I plant Buddleja in Zone 6?

In Zone 6 the last spring frost typically lands around late April and the first fall frost around mid-October. Planting after the last frost — or in early fall, so roots establish before the ground cools — gives the best establishment. Each plant page lists its own planting months.

Which Buddleja is best for Zone 6?

Start at the top of the list above: it is ranked by how many gardeners actually save and grow each variety, which is a strong real-world reliability signal. Then narrow by your sun exposure and the mature size that fits the bed.

Keep exploring

All Buddleja

Every Buddleja variety (91)

Buddleja in other zones

More for Zone 6

See Buddleja in your Zone 6 yard

Snap a photo of your space and Sow places these varieties in it at true mature size — then keeps the care schedule for everything you plant.