Cleome Hassleriana Helen Campbell - Thompson & Morgan - 26045
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This Cleome Hassleriana 'Helen Campbell' seed packet from Thompson & Morgan is ideal for gardeners seeking to add height, visual interest, and a touch of fragrance to their outdoor spaces, creating bushy screens or striking garden bed accents. Its primary benefit lies in its stunning, scented sprays of white flowers that attract attention. A caveat to consider is the specific temperature requirements for optimal germination. This product provides 50 seeds for cultivating the 'Helen Campbell' Cleome variety, known for its bushy growth and attractive blooms.
All features
| Model Part Number | 26045 |
|---|---|
| Brand | Thompson & Morgan |
Extended Product Information
FAQs
What is the expected height and spread of Cleome Hassleriana 'Helen Campbell'?
The expected height is up to 120cm (approximately 4 feet), with a spread of up to 50cm (approximately 1.6 feet).
When is the best time to sow Cleome 'Helen Campbell' seeds?
Sow seeds from mid-January to mid-March indoors in a propagator or warm place. Direct sowing outdoors is possible after the last frost.
What are the ideal germination temperatures?
An optimum temperature of 75-80°F (25-27°C) is recommended for germination. Fluctuating temperatures, with a night-time drop, can also be beneficial.
How far apart should I plant the Cleome seedlings?
Plant seedlings out at a spacing of approximately 30cm (12 inches) apart.
Does Cleome Hassleriana 'Helen Campbell' require staking?
Due to its potential height of up to 120cm, taller plants may benefit from staking, especially in exposed or windy locations, to prevent them from falling over.
What type of soil does Cleome prefer?
Cleome Hassleriana 'Helen Campbell' prefers a rich, light, well-drained soil. Amending heavy soils with compost or grit will improve drainage and fertility.
Are the flowers scented?
Yes, the 'Helen Campbell' variety features attractive, scented sprays of spiralling white flowers.
Troubleshooting
Seeds not germinating
Ensure consistent high temperatures (75-80°F / 25-27°C) during germination. Check that light is not excluded and that the compost is kept consistently moist but not waterlogged. Try sowing a second batch if initial germination is poor.
Seedlings are leggy and weak
Provide adequate light once seedlings emerge. Ensure they are not overcrowded and that the temperature is not excessively high. Consider transplanting into individual pots to give roots more space.
Plants failing to thrive after planting out
Confirm plants are in full sun and the soil is well-drained. Ensure all risk of frost has passed before planting. Amend soil with compost if it is poor or heavy clay.
Few flowers produced
Ensure the plant is receiving adequate sunlight and is not competing too heavily with nearby plants for resources. Regular watering, especially in dry periods, can encourage flowering.
Pros and Cons
Pros
- Produces beautiful, scented white flowers.
- Can be used to create effective garden screens.
- Adds significant height and structure to borders.
- Relatively easy to grow from seed with correct conditions.
- Attracts attention with its unique floral display.
Cons
- Requires specific, high temperatures for germination.
- Needs protection from frost until late spring.
- Prefers well-drained, rich soil which may need amendment.
- Can become quite tall, requiring adequate space.
- Images are for guidance only and results may vary.
Setup, Compatibility & Care
Sowing Indoors:
- Sow seeds from mid-January to mid-March.
- Use trays or pots with good seed compost.
- Place in a propagator or warm location, maintaining 75-80°F (25-27°C).
- Sow in well-drained compost, lightly covering seeds. Do not exclude light, as it aids germination.
- Fluctuating temperatures, with a drop at night, can benefit germination.
Transplanting and Planting Out:
- Transplant seedlings when large enough to handle.
- Harden off seedlings gradually before planting outdoors.
- Plant out when all risk of frost has passed.
- Space plants 30cm (12in) apart.
Growing Conditions:
- Sunlight: Full sun is required for best results.
- Soil: Prefers a rich, light, well-drained soil. Amend heavy soils with compost or grit.
- Watering: Water regularly, especially during dry spells, but avoid waterlogging.
- Support: Taller plants may benefit from staking, especially in windy locations.
Compatibility: Cleome Hassleriana 'Helen Campbell' is compatible with most border perennials and annuals that thrive in full sun and well-drained conditions. Avoid planting in areas that remain waterlogged.