Dill vs Onion

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

Dill

Anethum graveolens

Apiaceae · herbs

EdibleDeer ResistantLow Maintenance

Onion

Allium cepa

Amaryllidaceae · vegetables

EdibleDeer ResistantLow Maintenance

Hardiness Zone Range

Dill (Zones 2-11)

Onion (Zones 3-9)

Overlap: Both grow in zones 3–9

Detailed Comparison

Feature	Dill	Onion
Scientific Name	Anethum graveolens	Allium cepa
Family	Apiaceae	Amaryllidaceae
Category	herbs	vegetables
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Rich, Well-drained
Height	3'	1' 6"
Spread	1'	4"
Bloom Season	Summer	Summer
Bloom Color	Yellow	White
Growth Rate	Fast	Medium
Native Region	Mediterranean	Central Asia
Maintenance	Low	Low

Special Traits

Dill

Yes — EdibleYes — Deer ResistantNo — Drought Tolerant

Onion

Yes — EdibleYes — Deer ResistantNo — Drought Tolerant

Care Tips

Dill

✓Direct sow — dill doesn't transplant well due to taproot.
✓Succession plant every 3 weeks.
✓Let some plants go to seed for self-sowing and for harvest.
✓Attracts swallowtail butterflies.

Onion

✓Match variety to your latitude — long-day for north, short-day for south.
✓Plant sets or transplants for easiest results.
✓Stop watering when tops fall over.
✓Cure for 2 weeks before storing.

Which Plant Is Right for Your Garden?

Choose Dill if you want a low-maintenance plant, and want deer resistance. It thrives in full sun with medium water in zones 2–11.

Choose Onion if you want a low-maintenance plant, and want deer resistance. It thrives in full sun with medium water in zones 3–9.

Plant them together? Both overlap in zones 3–9. They share similar sun requirements (full sun), making them potential garden companions.

View DillProfile →View OnionProfile →

Frequently Asked Questions

Can Dill and Onion grow in the same hardiness zone?

Dill grows in USDA zones 2-11, while Onion grows in zones 3-9. Both plants can grow together in zones 3 through 9.

Do Dill and Onion have the same sun and water needs?

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

Which grows taller, Dill or Onion?

Dill grows taller at 3' compared to Onion at 1' 6". Dill spreads 1' while Onion spreads 4".

Are Dill and Onion deer resistant?

Yes, both Dill and Onion are considered deer resistant, making them excellent choices for gardens in areas with deer pressure.

Which is easier to maintain, Dill or Onion?

Both Dill and Onion 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	Dill	Onion
Scientific Name	Anethum graveolens	Allium cepa
Family	Apiaceae	Amaryllidaceae
Category	herbs	vegetables
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Rich, Well-drained
Height	3'	1' 6"
Spread	1'	4"
Bloom Season	Summer	Summer
Bloom Color	Yellow	White
Growth Rate	Fast	Medium
Native Region	Mediterranean	Central Asia
Maintenance	Low	Low

Care Tips

Dill

✓Direct sow — dill doesn't transplant well due to taproot.
✓Succession plant every 3 weeks.
✓Let some plants go to seed for self-sowing and for harvest.
✓Attracts swallowtail butterflies.

Onion

✓Match variety to your latitude — long-day for north, short-day for south.
✓Plant sets or transplants for easiest results.
✓Stop watering when tops fall over.
✓Cure for 2 weeks before storing.

Which Plant Is Right for Your Garden?

Choose Dill if you want a low-maintenance plant, and want deer resistance. It thrives in full sun with medium water in zones 2–11.

Choose Onion if you want a low-maintenance plant, and want deer resistance. It thrives in full sun with medium water in zones 3–9.

Plant them together? Both overlap in zones 3–9. They share similar sun requirements (full sun), making them potential garden companions.

Frequently Asked Questions

Can Dill and Onion grow in the same hardiness zone?

Dill grows in USDA zones 2-11, while Onion grows in zones 3-9. Both plants can grow together in zones 3 through 9.

Do Dill and Onion have the same sun and water needs?

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

Which grows taller, Dill or Onion?

Dill grows taller at 3' compared to Onion at 1' 6". Dill spreads 1' while Onion spreads 4".

Are Dill and Onion deer resistant?

Yes, both Dill and Onion are considered deer resistant, making them excellent choices for gardens in areas with deer pressure.

Which is easier to maintain, Dill or Onion?

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