Iris vs Morning Glory

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

Iris

Iris germanica

Iridaceae · flowers

Deer ResistantDrought TolerantLow Maintenance

Morning Glory

Ipomoea tricolor

Convolvulaceae · vines

Deer ResistantDrought TolerantLow Maintenance

Hardiness Zone Range

Iris (Zones 3-9)

Morning Glory (Zones 2-11)

Overlap: Both grow in zones 3–9

Detailed Comparison

Feature	Iris	Morning Glory
Scientific Name	Iris germanica	Ipomoea tricolor
Family	Iridaceae	Convolvulaceae
Category	flowers	vines
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧 Low to Medium	💧💧 Medium
Soil	Well-drained	Well-drained
Height	3'	10'
Spread	1' 6"	2'
Bloom Season	Spring	Summer-Fall
Bloom Color	Purple, Blue, Yellow, White	Blue, Purple, Pink, White
Growth Rate	Medium	Fast
Native Region	Mediterranean, Europe	Central America
Maintenance	Low	Low

Special Traits

Iris

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Morning Glory

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Care Tips

Iris

✓Plant rhizomes shallowly with tops exposed to sun.
✓Divide every 3-4 years.
✓Remove spent flower stalks.
✓Watch for iris borers.

Morning Glory

✓Nick or soak seeds overnight for faster germination.
✓Provide sturdy support.
✓Self-seeds prolifically — can become invasive.
✓Full sun is essential for abundant blooms.

Which Plant Is Right for Your Garden?

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

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

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

View IrisProfile →View Morning GloryProfile →

Frequently Asked Questions

Can Iris and Morning Glory grow in the same hardiness zone?

Iris grows in USDA zones 3-9, while Morning Glory grows in zones 2-11. Both plants can grow together in zones 3 through 9.

Do Iris and Morning Glory have the same sun and water needs?

Iris needs full sun and low to medium water, while Morning Glory needs full sun and medium water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Iris or Morning Glory?

Morning Glory grows taller at 10' compared to Iris at 3'. Morning Glory spreads 2' while Iris spreads 1' 6".

Are Iris and Morning Glory deer resistant?

Yes, both Iris and Morning Glory are considered deer resistant, making them excellent choices for gardens in areas with deer pressure.

Which is easier to maintain, Iris or Morning Glory?

Both Iris and Morning Glory 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	Iris	Morning Glory
Scientific Name	Iris germanica	Ipomoea tricolor
Family	Iridaceae	Convolvulaceae
Category	flowers	vines
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧 Low to Medium	💧💧 Medium
Soil	Well-drained	Well-drained
Height	3'	10'
Spread	1' 6"	2'
Bloom Season	Spring	Summer-Fall
Bloom Color	Purple, Blue, Yellow, White	Blue, Purple, Pink, White
Growth Rate	Medium	Fast
Native Region	Mediterranean, Europe	Central America
Maintenance	Low	Low

Care Tips

Iris

✓Plant rhizomes shallowly with tops exposed to sun.
✓Divide every 3-4 years.
✓Remove spent flower stalks.
✓Watch for iris borers.

Morning Glory

✓Nick or soak seeds overnight for faster germination.
✓Provide sturdy support.
✓Self-seeds prolifically — can become invasive.
✓Full sun is essential for abundant blooms.

Which Plant Is Right for Your Garden?

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

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

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 Iris and Morning Glory grow in the same hardiness zone?

Iris grows in USDA zones 3-9, while Morning Glory grows in zones 2-11. Both plants can grow together in zones 3 through 9.

Do Iris and Morning Glory have the same sun and water needs?

Iris needs full sun and low to medium water, while Morning Glory needs full sun and medium water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Iris or Morning Glory?

Morning Glory grows taller at 10' compared to Iris at 3'. Morning Glory spreads 2' while Iris spreads 1' 6".

Are Iris and Morning Glory deer resistant?

Yes, both Iris and Morning Glory are considered deer resistant, making them excellent choices for gardens in areas with deer pressure.

Which is easier to maintain, Iris or Morning Glory?

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