perennialN. America Native

Sticky Cuphea

Cuphea glutinosa

The Story

Plant Bio

Cuphea glutinosa is a perennial that produces purple tubular flowers that attract hummingbirds and butterflies.

This species is known for its compact growth habit and long bloom period.

Uses & Benefits:

Provides vibrant purple flowers that add color to borders and containers.

Attracts pollinators like bees and butterflies, supporting garden ecology.

Serves as a nectar source for hummingbirds and beneficial insects.

Essentials

At a Glance

Plant Type

Perennial

Height

12 inches

Width

18 inches

Light

Full Sun, Partial Sun

Zones

9, 10

Water

Moderate

Humidity

Average

Lifespan

Perennial in suitable zones

Native To

South America

Toxicity

Non-toxic

Bloom period

Mid-summer – Late summer

In flower about 2 months of the year

Planting

How to Grow

Tuck seeds into well-draining soil in early spring for best germination.
Mist cuttings regularly to maintain humidity and promote root growth.
Water consistently, avoiding waterlogged soil, especially during dry periods.
Feed with a balanced liquid fertilizer monthly during active growth.
Prune lightly after flowering to encourage bushy growth and remove dead stems.
Mulch around the base to retain moisture and suppress weeds.

Pro Tip

Use bright, indirect sunlight for optimal growth and vibrant flowering.

Keep It Thriving

Care Guide

Do

Water regularly but do not overwater 🌱
Provide well-draining soil to prevent root rot
Prune after flowering to maintain shape
Fertilize monthly during the growing season
Place in full sun for best blooms

Don't

Avoid overwatering which can cause root rot ❌
Don’t fertilize in winter when the plant is dormant
Keep away from heavy shade to ensure flowering
Don’t ignore pest signs early

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Divide
Fertilize
Mulch
Plant
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Vibrant border plant with purple flowersContainer centerpiece for patiosWildflower garden accent

Companion Plants

Lantana Salvia Gaillardia Coreopsis Verbena

Multiply

Propagation Methods

Good to Know

Common Questions

Sticky Cuphea questions

What zones can Sticky Cuphea grow in?

Sticky Cuphea is hardy in USDA Zones 9–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Sticky Cuphea deer resistant?

Yes — Sticky Cuphea is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Sticky Cuphea bloom?

Sticky Cuphea typically blooms in mid-summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Sticky Cuphea need full sun?

Sticky Cuphea does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Sticky Cuphea drought tolerant?

Yes — once established (usually after the first full season), Sticky Cuphea handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.