Black-Eyed Susan Vine vs Forsythia

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

Black-Eyed Susan Vine

Thunbergia alata

Acanthaceae · vines

Deer ResistantLow Maintenance

Forsythia

Forsythia × intermedia

Oleaceae · shrubs

Deer ResistantLow Maintenance

Hardiness Zone Range

Black-Eyed Susan Vine (Zones 10-11)

Forsythia (Zones 5-8)

No zone overlap — these plants cannot be grown in the same climate

Detailed Comparison

Feature	Black-Eyed Susan Vine	Forsythia
Scientific Name	Thunbergia alata	Forsythia × intermedia
Family	Acanthaceae	Oleaceae
Category	vines	shrubs
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Adaptable
Height	8'	10'
Spread	2'	10'
Bloom Season	Summer-Fall	Early Spring
Bloom Color	Orange, Yellow, White	Yellow
Growth Rate	Fast	Fast
Native Region	East Africa	East Asia
Maintenance	Low	Low

Special Traits

Black-Eyed Susan Vine

No — EdibleYes — Deer ResistantNo — Drought Tolerant

Forsythia

No — EdibleYes — Deer ResistantNo — Drought Tolerant

Care Tips

Black-Eyed Susan Vine

✓Treat as annual in most zones.
✓Provide trellis or let trail from basket.
✓Deadhead for continuous bloom.
✓Start indoors 6 weeks before last frost.

Forsythia

✓Prune immediately after flowering — blooms on old wood.
✓Can be cut to ground for rejuvenation.
✓Use as informal hedge or specimen.
✓Branches root where they touch ground.

Which Plant Is Right for Your Garden?

Choose Black-Eyed Susan Vine if you want a low-maintenance plant, and want deer resistance. It thrives in full sun with medium water in zones 10–11.

Choose Forsythia if you want a low-maintenance plant, and want deer resistance. It thrives in full sun with medium water in zones 5–8.

View Black-Eyed Susan VineProfile →View ForsythiaProfile →

Frequently Asked Questions

Can Black-Eyed Susan Vine and Forsythia grow in the same hardiness zone?

Black-Eyed Susan Vine grows in USDA zones 10-11, while Forsythia grows in zones 5-8. These plants have no overlapping hardiness zones, so they cannot be grown together in the same climate.

Do Black-Eyed Susan Vine and Forsythia have the same sun and water needs?

Black-Eyed Susan Vine needs full sun and medium water, while Forsythia needs full sun and medium water. They share similar growing requirements and can be planted in the same bed.

Which grows taller, Black-Eyed Susan Vine or Forsythia?

Forsythia grows taller at 10' compared to Black-Eyed Susan Vine at 8'. Forsythia spreads 10' while Black-Eyed Susan Vine spreads 2'.

Are Black-Eyed Susan Vine and Forsythia deer resistant?

Yes, both Black-Eyed Susan Vine and Forsythia are considered deer resistant, making them excellent choices for gardens in areas with deer pressure.

Which is easier to maintain, Black-Eyed Susan Vine or Forsythia?

Both Black-Eyed Susan Vine and Forsythia 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	Black-Eyed Susan Vine	Forsythia
Scientific Name	Thunbergia alata	Forsythia × intermedia
Family	Acanthaceae	Oleaceae
Category	vines	shrubs
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Adaptable
Height	8'	10'
Spread	2'	10'
Bloom Season	Summer-Fall	Early Spring
Bloom Color	Orange, Yellow, White	Yellow
Growth Rate	Fast	Fast
Native Region	East Africa	East Asia
Maintenance	Low	Low

Care Tips

Black-Eyed Susan Vine

✓Treat as annual in most zones.
✓Provide trellis or let trail from basket.
✓Deadhead for continuous bloom.
✓Start indoors 6 weeks before last frost.

Forsythia

✓Prune immediately after flowering — blooms on old wood.
✓Can be cut to ground for rejuvenation.
✓Use as informal hedge or specimen.
✓Branches root where they touch ground.

Frequently Asked Questions

Can Black-Eyed Susan Vine and Forsythia grow in the same hardiness zone?

Black-Eyed Susan Vine grows in USDA zones 10-11, while Forsythia grows in zones 5-8. These plants have no overlapping hardiness zones, so they cannot be grown together in the same climate.

Do Black-Eyed Susan Vine and Forsythia have the same sun and water needs?

Black-Eyed Susan Vine needs full sun and medium water, while Forsythia needs full sun and medium water. They share similar growing requirements and can be planted in the same bed.

Which grows taller, Black-Eyed Susan Vine or Forsythia?

Forsythia grows taller at 10' compared to Black-Eyed Susan Vine at 8'. Forsythia spreads 10' while Black-Eyed Susan Vine spreads 2'.

Are Black-Eyed Susan Vine and Forsythia deer resistant?

Yes, both Black-Eyed Susan Vine and Forsythia are considered deer resistant, making them excellent choices for gardens in areas with deer pressure.

Which is easier to maintain, Black-Eyed Susan Vine or Forsythia?

Both Black-Eyed Susan Vine and Forsythia have low maintenance requirements. They need a similar level of care including regular attention to watering, pruning, and soil health.