Parsley vs Penstemon

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

Parsley

Petroselinum crispum

Apiaceae · herbs

EdibleLow Maintenance

Penstemon

Penstemon digitalis

Plantaginaceae · flowers

Deer ResistantDrought TolerantLow Maintenance

Hardiness Zone Range

Parsley (Zones 5-9)

Penstemon (Zones 3-8)

Overlap: Both grow in zones 5–8

Detailed Comparison

Feature	Parsley	Penstemon
Scientific Name	Petroselinum crispum	Penstemon digitalis
Family	Apiaceae	Plantaginaceae
Category	herbs	flowers
Sun	☀️ Full Sun to Part Shade	☀️ Full Sun
Water	💧💧 Medium	💧 Low
Soil	Rich, Moist	Well-drained
Height	1'	3'
Spread	1'	1' 6"
Bloom Season	Spring-Summer	Early Summer
Bloom Color	Yellow-green (second year)	White, Pink, Purple
Growth Rate	Medium	Medium
Native Region	Mediterranean	North America
Maintenance	Low	Low

Special Traits

Parsley

Yes — EdibleNo — Deer ResistantNo — Drought Tolerant

Penstemon

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Care Tips

Parsley

✓Soak seeds overnight before planting — slow to germinate (3-4 weeks).
✓Harvest outer stems first.
✓Cut flower stalks to prolong leaf production.
✓Swallowtail butterfly host plant.

Penstemon

✓Excellent drainage essential — root rot is the main killer.
✓Don't over-fertilize or overwater.
✓Cut back after first flush for possible rebloom.
✓Short-lived but self-seeds.

Which Plant Is Right for Your Garden?

Choose Parsley if you want a low-maintenance plant. It thrives in full sun to part shade with medium water in zones 5–9.

Choose Penstemon if you want a low-maintenance plant, need drought tolerance, and want deer resistance. It thrives in full sun with low water in zones 3–8.

Plant them together? Both overlap in zones 5–8. However, they have different sun needs, so plan your garden layout carefully.

View ParsleyProfile →View PenstemonProfile →

Frequently Asked Questions

Can Parsley and Penstemon grow in the same hardiness zone?

Parsley grows in USDA zones 5-9, while Penstemon grows in zones 3-8. Both plants can grow together in zones 5 through 8.

Do Parsley and Penstemon have the same sun and water needs?

Parsley needs full sun to part shade and medium water, while Penstemon needs full sun and low water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Parsley or Penstemon?

Penstemon grows taller at 3' compared to Parsley at 1'. Penstemon spreads 1' 6" while Parsley spreads 1'.

Are Parsley and Penstemon deer resistant?

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

Which is easier to maintain, Parsley or Penstemon?

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

Explore More Data Tools

For adjacent public-data tools, methodology notes, and network updates, visit DataPeek Facts.

Detailed Comparison

Feature	Parsley	Penstemon
Scientific Name	Petroselinum crispum	Penstemon digitalis
Family	Apiaceae	Plantaginaceae
Category	herbs	flowers
Sun	☀️ Full Sun to Part Shade	☀️ Full Sun
Water	💧💧 Medium	💧 Low
Soil	Rich, Moist	Well-drained
Height	1'	3'
Spread	1'	1' 6"
Bloom Season	Spring-Summer	Early Summer
Bloom Color	Yellow-green (second year)	White, Pink, Purple
Growth Rate	Medium	Medium
Native Region	Mediterranean	North America
Maintenance	Low	Low

Care Tips

Parsley

✓Soak seeds overnight before planting — slow to germinate (3-4 weeks).
✓Harvest outer stems first.
✓Cut flower stalks to prolong leaf production.
✓Swallowtail butterfly host plant.

Penstemon

✓Excellent drainage essential — root rot is the main killer.
✓Don't over-fertilize or overwater.
✓Cut back after first flush for possible rebloom.
✓Short-lived but self-seeds.

Which Plant Is Right for Your Garden?

Choose Parsley if you want a low-maintenance plant. It thrives in full sun to part shade with medium water in zones 5–9.

Choose Penstemon if you want a low-maintenance plant, need drought tolerance, and want deer resistance. It thrives in full sun with low water in zones 3–8.

Plant them together? Both overlap in zones 5–8. However, they have different sun needs, so plan your garden layout carefully.

Frequently Asked Questions

Can Parsley and Penstemon grow in the same hardiness zone?

Parsley grows in USDA zones 5-9, while Penstemon grows in zones 3-8. Both plants can grow together in zones 5 through 8.

Do Parsley and Penstemon have the same sun and water needs?

Parsley needs full sun to part shade and medium water, while Penstemon needs full sun and low water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Parsley or Penstemon?

Penstemon grows taller at 3' compared to Parsley at 1'. Penstemon spreads 1' 6" while Parsley spreads 1'.

Are Parsley and Penstemon deer resistant?

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

Which is easier to maintain, Parsley or Penstemon?

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