Thompson & Morgan Spring Onion White Lisbon Seeds - 500 Seeds
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Product Information
Full details
The Thompson & Morgan White Lisbon Spring Onion seeds are an ideal choice for both novice and experienced gardeners looking for a reliable, fast-growing crop. These seeds offer the benefit of a continuous harvest throughout the spring, summer, and autumn months when sown in succession, though success heavily depends on maintaining well-drained, fertile soil and providing a full sun location. This pack includes approximately 500 seeds capable of producing crisp, delicious salad onions with minimal long-term maintenance.
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| Brand | Thompson & Morgan |
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Extended Product Information
FAQs
When is the best time to sow White Lisbon seeds?
You can sow them in succession from March through August, or in September for an overwintered spring crop.
How deep should I plant the seeds?
The seeds should be sown 13mm deep in the soil.
Do these onions grow well in pots?
Yes, they can be grown in containers as long as the pot has good drainage and the soil remains fertile.
How far apart should the rows be?
Rows should be spaced 15cm apart to allow adequate room for development.
How many seeds come in a packet?
Each packet contains approximately 500 seeds.
Do I need to fertilize my spring onions?
If your soil is already fertile with organic matter, additional fertilizer is usually not required, but light compost can boost growth.
Troubleshooting
Seeds failing to germinate
Ensure the soil remains consistently moist during the germination period and check that the seeds were not planted deeper than 13mm.
Onions rotting in the ground
Check soil drainage; if the soil is too heavy, add compost or grit to improve aeration and drainage.
Stunted growth
Ensure the plants are receiving at least 6-8 hours of direct sunlight and that they are not overcrowded in the row.
Pros and Cons
Pros
- Ideal for succession planting for a continuous harvest
- Suitable for overwintering for early spring crops
- Easy for beginners to grow
- High yield from a single packet of 500 seeds
- Crisp texture and classic flavor profile
Cons
- Requires full sun exposure to thrive
- Soil must be well-drained to avoid bulb rot
- Succession planting is required for a year-round supply
Setup, Compatibility & Care
To ensure your White Lisbon crop succeeds, prepare your garden bed by removing weeds and ensuring the soil is fertile and loose. These onions do not tolerate waterlogged soil, so incorporate organic matter if your garden has heavy clay. Place your patch in a spot that receives full sun throughout the day. Water consistently during dry spells, but avoid over-saturating the soil as this can lead to disease. Thin out seedlings once they are large enough to handle to ensure each onion has enough space to mature without competition.