Lemon Tree vs Onion

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

Lemon Tree

Citrus limon

Rutaceae · trees

EdibleDeer ResistantDrought TolerantMedium Maintenance

Onion

Allium cepa

Amaryllidaceae · vegetables

EdibleDeer ResistantLow Maintenance

Hardiness Zone Range

Lemon Tree (Zones 9-11)

Onion (Zones 3-9)

Overlap: Both grow in zones 9–9

Detailed Comparison

Feature	Lemon Tree	Onion
Scientific Name	Citrus limon	Allium cepa
Family	Rutaceae	Amaryllidaceae
Category	trees	vegetables
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained, Sandy, Acidic	Rich, Well-drained
Height	20'	1' 6"
Spread	15'	4"
Bloom Season	Year-round	Summer
Bloom Color	White, Purple	White
Growth Rate	Medium	Medium
Native Region	Southeast Asia	Central Asia
Maintenance	Medium	Low

Special Traits

Lemon Tree

Yes — EdibleYes — Deer ResistantYes — Drought Tolerant

Onion

Yes — EdibleYes — Deer ResistantNo — Drought Tolerant

Care Tips

Lemon Tree

✓Frost sensitive — protect below 30°F.
✓Feed with citrus fertilizer regularly.
✓Water deeply but let soil dry between waterings.
✓Scale and citrus leaf miner are common pests.

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 Lemon Tree if you don't mind medium maintenance, need drought tolerance, and want deer resistance. It thrives in full sun with medium water in zones 9–11.

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 9–9. They share similar sun requirements (full sun), making them potential garden companions.

View Lemon TreeProfile →View OnionProfile →

Frequently Asked Questions

Can Lemon Tree and Onion grow in the same hardiness zone?

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

Do Lemon Tree and Onion have the same sun and water needs?

Lemon Tree 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, Lemon Tree or Onion?

Lemon Tree grows taller at 20' compared to Onion at 1' 6". Lemon Tree spreads 15' while Onion spreads 4".

Are Lemon Tree and Onion deer resistant?

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

Which is easier to maintain, Lemon Tree or Onion?

Lemon Tree has medium maintenance while Onion has low maintenance. Onion may be easier for beginning gardeners to manage.

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Detailed Comparison

Feature	Lemon Tree	Onion
Scientific Name	Citrus limon	Allium cepa
Family	Rutaceae	Amaryllidaceae
Category	trees	vegetables
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained, Sandy, Acidic	Rich, Well-drained
Height	20'	1' 6"
Spread	15'	4"
Bloom Season	Year-round	Summer
Bloom Color	White, Purple	White
Growth Rate	Medium	Medium
Native Region	Southeast Asia	Central Asia
Maintenance	Medium	Low

Care Tips

Lemon Tree

✓Frost sensitive — protect below 30°F.
✓Feed with citrus fertilizer regularly.
✓Water deeply but let soil dry between waterings.
✓Scale and citrus leaf miner are common pests.

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 Lemon Tree if you don't mind medium maintenance, need drought tolerance, and want deer resistance. It thrives in full sun with medium water in zones 9–11.

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 9–9. They share similar sun requirements (full sun), making them potential garden companions.

Frequently Asked Questions

Can Lemon Tree and Onion grow in the same hardiness zone?

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

Do Lemon Tree and Onion have the same sun and water needs?

Lemon Tree 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, Lemon Tree or Onion?

Lemon Tree grows taller at 20' compared to Onion at 1' 6". Lemon Tree spreads 15' while Onion spreads 4".

Are Lemon Tree and Onion deer resistant?

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

Which is easier to maintain, Lemon Tree or Onion?

Lemon Tree has medium maintenance while Onion has low maintenance. Onion may be easier for beginning gardeners to manage.