Cleome hassleriana
Spider flower offers a striking tropical look with large, airy flower clusters on tall stems, blooming vigorously throughout the hot summer months.
Growing Guide & Production Protocols
Cultivation & Growing Guidelines
Cleome hassleriana, also known as ‘spider flower’, belongs to the Cleomaceae family and is recognized for its tall, airy habit and distinctive spidery blooms that add dramatic vertical interest to landscapes. This heat- and drought-tolerant annual thrives in full sun, well-drained soil, and moderate fertility. Cleome is ideal for mass plantings, cottage-style gardens, and background accents where bold color and structure are desired throughout the summer.
Spray adjuvant at sticking, remove from mist quickly, and keep soil evenly moist. Maintain pH 5.6–6.2, EC 0.8-0.9, feed 50 ppm N then 100–150 ppm N. Apply fungicide at sticking and week 2; Daminozide 1,500–2,500 ppm in week 4. Pinch at transplant.
For more detailed growing tips – such as sticking guidelines, recommended PGRs, and scheduling protocols – check out our Cleome hassleriana Growing Tips.
Common Production Base Specs
Core agronomic requirements applying across all Cleome hassleriana series.
| Crop Type | Bedding - Annuals |
|---|---|
| Growing Guide & Production Protocols | Cleome hassleriana, part of the Cleomaceae family, is known for its unique, spider-like flower clusters and tall, airy stems. This fast-growing annual thrives in full sun, average, well-drained soil. With strong heat and drought resistance, Cleome hassleriana blooms from early summer until frost, making it a favorite for background plantings, cottage gardens, and large mixed beds that need dramatic, exotic height. |
| Cultivation & Groweing guidelines | Remove from mist early to prevent stretching. Maintain warm temperatures at 72-75°F (22-24°C) during early stages, dropping to 65-68°F (18-20°C) to finish. pH 5.8-6.2, EC 0.9-1.2, feed 100-150 ppm N. Preventative broad-spectrum fungicide recommended at week 2. Pinch soft tips to promote branching; apply moderate PGRs as needed. |
| Growth Habit | Tall / Upright |
| PGR Requirements | Moderate |
| Recommended Formats | Gallons, Large Containers, Landscape |
| Flowering Season | Summer to Autumn |
Commercial Cleome hassleriana Series Overview
Danziger offers a specialized Cleome hassleriana lineup, with each series bred for specific growth habits and production goals. Danziger offers different series within this crop:
-
CLIO™ Series
Explore Series: CLIO™ Series →- Sterile flowers
- Long and continuous flowering
- Great garden performance
- Vigorous growth habit
