Zone 5 · winter lows -20°F to -10°F
Buddleja for Zone 5
78 Buddleja varieties rated hardy through Zone 5, ranked by how many gardeners actually grow them. Zone 5 is classic northern gardening with a reliable snow blanket.
The Buddleja that thrive in Zone 5
#1 most savedPugster Amethyst Butterfly Bush
Buddleja davidii 'Pugster Amethyst'
#2 most savedTrio Butterfly Bush
Buddleja davidii 'Trio'
#3 most savedBicolor Butterfly Bush
Buddleja davidii 'Bicolor'

Butterfly Bush
Buddleja davidii

Butterfly Bush Purple Prince
Buddleja davidii 'Purple Prince'

Hot Raspberry Butterfly Bush
Buddleja davidii 'Hot Raspberry'

Butterfly Haven Butterfly Bush
Buddleja davidii 'Butterfly Haven'

Grand Cascade Butterfly Bush
Buddleja davidii 'Grand Cascade'

Deluxe Butterfly Bush
Buddleja davidii 'Deluxe'

Butterfly Bush Empire Blue
Buddleja davidii 'Empire Blue'

Butterfly Bush Sky Blue
Buddleja davidii 'Sky Blue'

Miss Molly Butterfly Bush
Buddleja davidii 'Miss Molly'

Butterfly Bush Honeycomb
Buddleja davidii 'Honeycomb'

Miss Violet Butterfly Bush
Buddleja davidii 'Miss Violet'

Pink Butterfly Bush
Buddleja davidii 'Charming Pink'

White Profusion Butterfly Bush
Buddleja davidii 'White Profusion'

Pugster Blue Butterfly Bush
Buddleja davidii 'Pugster Blue'

Ellen's Blue Butterfly Bush
Buddleja davidii 'Ellen's Blue'

Butterfly Bush Potters Purple
Buddleja davidii 'Potters Purple'

Black Knight Butterfly Bush
Buddleja davidii 'Black Knight'

Pink Delight Butterfly Bush
Buddleja davidii 'Pink Delight'

Le Petit Butterfly Bush
Buddleja davidii 'Le Petit'

Color Crush Butterfly Bush
Buddleja davidii 'Color Crush'

Fountain Butterfly Bush
Buddleja alternifolia
Showing the 24 most-saved of 78 Zone 5–hardy Buddleja varieties. See the full Buddleja list →
Buddleja in Zone 5
Will Buddleja survive a Zone 5 winter?
78 of the 80 Buddleja varieties in the Sow catalog are rated hardy through Zone 5, where winter lows reach -20°F to -10°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 5?
In Zone 5 the last spring frost typically lands around early May and the first fall frost around early 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 5?
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
See Buddleja in your Zone 5 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.