Planting and Growing Allium 'Haarlem Superglobe'
| Care difficulty | 2 / 5 |
|---|---|
| Watering schedule | Moist soil during active growth, then reduce watering after foliage yellows |
| Sunlight requirements | Full sun |
| Ideal temperature | Information to be completed |
| Soil type | Chalk · Loam · Sand |
| Soil pH | Acid · Alkaline · Neutral |
| Soil moisture | Moist but well drained · Well drained |
| Fertilizing | Light bulb fertilizer at emergence and again after flowering |
| Toxicity | Information to be completed |
How to Water Allium 'Haarlem Superglobe'?
Moist soil during active growth, then reduce watering after foliage yellows
Learn more →What Are the Sunlight Requirements for Allium 'Haarlem Superglobe'?
Full sun
Learn more →What Is the Ideal Temperature Range for Allium 'Haarlem Superglobe'?
Information to be completed
Learn more →What Soil Is Best for Allium 'Haarlem Superglobe'?
- Soil type
- Chalk · Loam · Sand
- Soil pH
- Acid · Alkaline · Neutral
What Are the Moisture Requirements for Allium 'Haarlem Superglobe'?
Moist but well drained · Well drained
Learn more →How to Fertilize Allium 'Haarlem Superglobe'?
Light bulb fertilizer at emergence and again after flowering
Learn more →How to Prune Allium 'Haarlem Superglobe'?
No pruning required, other than to remove old flowered stems and foliage
Learn more →How to Propagate Allium 'Haarlem Superglobe'?
Propagate by offsets to obtain plants the same as the mother bulb, which can be carefully detached by lifting the bulb after flowering has finished. See bulb propagation. Propagation by seed may not produce plants that are true, as this is a hybrid plant
Learn more →How to Transplant Allium 'Haarlem Superglobe'?
Information to be completed
Learn more →How to Care for Allium 'Haarlem Superglobe' in Winter?
Information to be completed
Learn more →How to Plant Allium 'Haarlem Superglobe'?
Easy to grow in full sun and a fertile well-drained soil. It is best to grow in containers where garden soil is heavy clay and prone to saturation over winter. See allium cultivation
Learn more →How to Repot Allium 'Haarlem Superglobe'?
Information to be completed
Learn more →How to Harvest Allium 'Haarlem Superglobe'?
Information to be completed
Learn more →Common Pests & Diseases
Diseases
May be susceptible to onion white rot, and onion downy mildew
Pests
May be susceptible to slugs, snails and allium leaf miner
Explore the plant health library →The Toxicity of Allium 'Haarlem Superglobe'
Information to be completed