Basil vs Delphinium

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

Basil

Ocimum basilicum

Lamiaceae · herbs

EdibleLow Maintenance

Delphinium

Delphinium elatum

Ranunculaceae · flowers

Deer ResistantHigh Maintenance

Hardiness Zone Range

Basil (Zones 2-11)

Delphinium (Zones 3-7)

Overlap: Both grow in zones 3–7

Detailed Comparison

Feature	Basil	Delphinium
Scientific Name	Ocimum basilicum	Delphinium elatum
Family	Lamiaceae	Ranunculaceae
Category	herbs	flowers
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Rich, Well-drained	Rich, Well-drained
Height	2'	6'
Spread	1'	2'
Bloom Season	Summer	Early Summer
Bloom Color	White	Blue, Purple, White, Pink
Growth Rate	Fast	Fast
Native Region	India, Southeast Asia	Europe, Asia
Maintenance	Low	High

Special Traits

Basil

Yes — EdibleNo — Deer ResistantNo — Drought Tolerant

Delphinium

No — EdibleYes — Deer ResistantNo — Drought Tolerant

Care Tips

Basil

✓Pinch flowers to prolong leaf production.
✓Harvest from the top down.
✓Don't refrigerate fresh leaves — they turn black.
✓Plant after all frost danger has passed.

Delphinium

✓Stake tall varieties.
✓Cut back after first bloom for possible rebloom.
✓Needs cool summers — struggles in heat.
✓Slugs love young growth.
✓All parts are toxic.

Which Plant Is Right for Your Garden?

Choose Basil if you want a low-maintenance plant. It thrives in full sun with medium water in zones 2–11.

Choose Delphinium if you don't mind high maintenance, and want deer resistance. It thrives in full sun with medium water in zones 3–7.

Plant them together? Both overlap in zones 3–7. They share similar sun requirements (full sun), making them potential garden companions.

View BasilProfile →View DelphiniumProfile →

Frequently Asked Questions

Can Basil and Delphinium grow in the same hardiness zone?

Basil grows in USDA zones 2-11, while Delphinium grows in zones 3-7. Both plants can grow together in zones 3 through 7.

Do Basil and Delphinium have the same sun and water needs?

Basil needs full sun and medium water, while Delphinium needs full sun and medium water. They share similar growing requirements and can be planted in the same bed.

Which grows taller, Basil or Delphinium?

Delphinium grows taller at 6' compared to Basil at 2'. Delphinium spreads 2' while Basil spreads 1'.

Are Basil and Delphinium deer resistant?

Delphinium is deer resistant, but Basil is not. If deer are a concern, Delphinium is the better choice, or protect Basil with fencing.

Which is easier to maintain, Basil or Delphinium?

Basil has low maintenance while Delphinium has high maintenance. Basil may be easier for beginning gardeners to manage.

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Detailed Comparison

Feature	Basil	Delphinium
Scientific Name	Ocimum basilicum	Delphinium elatum
Family	Lamiaceae	Ranunculaceae
Category	herbs	flowers
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Rich, Well-drained	Rich, Well-drained
Height	2'	6'
Spread	1'	2'
Bloom Season	Summer	Early Summer
Bloom Color	White	Blue, Purple, White, Pink
Growth Rate	Fast	Fast
Native Region	India, Southeast Asia	Europe, Asia
Maintenance	Low	High

Care Tips

Basil

✓Pinch flowers to prolong leaf production.
✓Harvest from the top down.
✓Don't refrigerate fresh leaves — they turn black.
✓Plant after all frost danger has passed.

Delphinium

✓Stake tall varieties.
✓Cut back after first bloom for possible rebloom.
✓Needs cool summers — struggles in heat.
✓Slugs love young growth.
✓All parts are toxic.

Which Plant Is Right for Your Garden?

Choose Basil if you want a low-maintenance plant. It thrives in full sun with medium water in zones 2–11.

Choose Delphinium if you don't mind high maintenance, and want deer resistance. It thrives in full sun with medium water in zones 3–7.

Plant them together? Both overlap in zones 3–7. They share similar sun requirements (full sun), making them potential garden companions.

Frequently Asked Questions

Can Basil and Delphinium grow in the same hardiness zone?

Basil grows in USDA zones 2-11, while Delphinium grows in zones 3-7. Both plants can grow together in zones 3 through 7.

Do Basil and Delphinium have the same sun and water needs?

Basil needs full sun and medium water, while Delphinium needs full sun and medium water. They share similar growing requirements and can be planted in the same bed.

Which grows taller, Basil or Delphinium?

Delphinium grows taller at 6' compared to Basil at 2'. Delphinium spreads 2' while Basil spreads 1'.

Are Basil and Delphinium deer resistant?

Delphinium is deer resistant, but Basil is not. If deer are a concern, Delphinium is the better choice, or protect Basil with fencing.

Which is easier to maintain, Basil or Delphinium?

Basil has low maintenance while Delphinium has high maintenance. Basil may be easier for beginning gardeners to manage.