Butterfly Bush vs Butterfly Weed

Side-by-side plant comparison — which is right for your garden?

Butterfly Bush

Buddleja davidii

Scrophulariaceae · shrubs

Deer ResistantDrought TolerantLow Maintenance

Butterfly Weed

Asclepias tuberosa

Apocynaceae · flowers

Deer ResistantDrought TolerantLow Maintenance

Hardiness Zone Range

Butterfly Bush (Zones 5-9)

Butterfly Weed (Zones 3-9)

Overlap: Both grow in zones 5–9

Detailed Comparison

Feature	Butterfly Bush	Butterfly Weed
Scientific Name	Buddleja davidii	Asclepias tuberosa
Family	Scrophulariaceae	Apocynaceae
Category	shrubs	flowers
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧 Low
Soil	Well-drained	Well-drained, Sandy
Height	10'	2' 6"
Spread	8'	1' 6"
Bloom Season	Summer-Fall	Summer
Bloom Color	Purple, Pink, White	Orange
Growth Rate	Fast	Medium
Native Region	China	Eastern North America
Maintenance	Low	Low

Special Traits

Butterfly Bush

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Butterfly Weed

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Care Tips

Butterfly Bush

✓Cut back to 12-18 inches in early spring — blooms on new wood.
✓Deadhead for continuous flowering.
✓Can be invasive — choose sterile cultivars.
✓Full sun essential.

Butterfly Weed

✓Deep taproot — don't transplant.
✓Direct sow or plant young.
✓Late to emerge in spring — mark location.
✓Monarch caterpillar host plant.

Which Plant Is Right for Your Garden?

Choose Butterfly Bush if you want a low-maintenance plant, need drought tolerance, and want deer resistance. It thrives in full sun with medium water in zones 5–9.

Choose Butterfly Weed if you want a low-maintenance plant, need drought tolerance, and want deer resistance. It thrives in full sun with low water in zones 3–9.

Plant them together? Both overlap in zones 5–9. They share similar sun requirements (full sun), making them potential garden companions.

View Butterfly BushProfile →View Butterfly WeedProfile →

Frequently Asked Questions

Can Butterfly Bush and Butterfly Weed grow in the same hardiness zone?

Butterfly Bush grows in USDA zones 5-9, while Butterfly Weed grows in zones 3-9. Both plants can grow together in zones 5 through 9.

Do Butterfly Bush and Butterfly Weed have the same sun and water needs?

Butterfly Bush needs full sun and medium water, while Butterfly Weed needs full sun and low water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Butterfly Bush or Butterfly Weed?

Butterfly Bush grows taller at 10' compared to Butterfly Weed at 2' 6". Butterfly Bush spreads 8' while Butterfly Weed spreads 1' 6".

Are Butterfly Bush and Butterfly Weed deer resistant?

Yes, both Butterfly Bush and Butterfly Weed are considered deer resistant, making them excellent choices for gardens in areas with deer pressure.

Which is easier to maintain, Butterfly Bush or Butterfly Weed?

Both Butterfly Bush and Butterfly Weed have low maintenance requirements. They need a similar level of care including regular attention to watering, pruning, and soil health.

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Detailed Comparison

Feature	Butterfly Bush	Butterfly Weed
Scientific Name	Buddleja davidii	Asclepias tuberosa
Family	Scrophulariaceae	Apocynaceae
Category	shrubs	flowers
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧 Low
Soil	Well-drained	Well-drained, Sandy
Height	10'	2' 6"
Spread	8'	1' 6"
Bloom Season	Summer-Fall	Summer
Bloom Color	Purple, Pink, White	Orange
Growth Rate	Fast	Medium
Native Region	China	Eastern North America
Maintenance	Low	Low

Care Tips

Butterfly Bush

✓Cut back to 12-18 inches in early spring — blooms on new wood.
✓Deadhead for continuous flowering.
✓Can be invasive — choose sterile cultivars.
✓Full sun essential.

Butterfly Weed

✓Deep taproot — don't transplant.
✓Direct sow or plant young.
✓Late to emerge in spring — mark location.
✓Monarch caterpillar host plant.

Which Plant Is Right for Your Garden?

Choose Butterfly Bush if you want a low-maintenance plant, need drought tolerance, and want deer resistance. It thrives in full sun with medium water in zones 5–9.

Choose Butterfly Weed if you want a low-maintenance plant, need drought tolerance, and want deer resistance. It thrives in full sun with low water in zones 3–9.

Plant them together? Both overlap in zones 5–9. They share similar sun requirements (full sun), making them potential garden companions.

Frequently Asked Questions

Can Butterfly Bush and Butterfly Weed grow in the same hardiness zone?

Butterfly Bush grows in USDA zones 5-9, while Butterfly Weed grows in zones 3-9. Both plants can grow together in zones 5 through 9.

Do Butterfly Bush and Butterfly Weed have the same sun and water needs?

Butterfly Bush needs full sun and medium water, while Butterfly Weed needs full sun and low water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Butterfly Bush or Butterfly Weed?

Butterfly Bush grows taller at 10' compared to Butterfly Weed at 2' 6". Butterfly Bush spreads 8' while Butterfly Weed spreads 1' 6".

Are Butterfly Bush and Butterfly Weed deer resistant?

Yes, both Butterfly Bush and Butterfly Weed are considered deer resistant, making them excellent choices for gardens in areas with deer pressure.

Which is easier to maintain, Butterfly Bush or Butterfly Weed?

Both Butterfly Bush and Butterfly Weed have low maintenance requirements. They need a similar level of care including regular attention to watering, pruning, and soil health.