Unwins Onion Seeds - Fasto F1
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This guide is for home gardeners seeking a reliable and productive onion variety. The Unwins Onion Fasto F1 offers heavy cropping and excellent storability, providing a flavorful base for cooking and a harvest that lasts. A key consideration is the requirement for indoor sowing to ensure optimal germination and early growth.
All features
| Model Part Number | Fasto F1 |
|---|---|
| Brand | Unwins |
Extended Product Information
FAQs
When is the best time to sow Unwins Onion Fasto F1 seeds?
You can sow indoors between February and April. For outdoor sowing, wait until the risk of frost has passed and the soil has warmed.
How far apart should I plant the onion seedlings?
Space plants 15 cm apart with 30 cm between rows when planting them out to their cropping positions.
How long do Fasto F1 onions store for?
When stored correctly in cool, dry, and dark conditions, Fasto F1 onions can be stored for several months.
Can I sow these seeds directly outdoors?
Yes, you can sow seeds outdoors, but indoor sowing is recommended for a head start and potentially larger bulbs, especially in cooler climates.
What is the purpose of thinning the seedlings?
Thinning allows each onion plant sufficient space and resources (nutrients, water, light) to develop a full-sized bulb.
How do I prepare onions for storage?
After harvesting, lift the onions and spread them out to dry completely in a well-ventilated area, such as a garage or shed, before storing them.
Troubleshooting
Seeds not germinating indoors
Ensure consistent warmth (15–20 °C) and adequate moisture in the compost. Check if seeds are past their expiration date.
Seedlings are leggy and weak
Provide more light but avoid direct, intense sunlight. Ensure adequate ventilation.
Poor bulb development
Ensure proper thinning to the recommended spacing (15 cm apart). Check for adequate sunlight and soil drainage.
Onions rotting in storage
Ensure onions are completely dry before storing. Store in a cool, dry, and dark location with good air circulation. Remove any damaged or diseased onions before storing.
Pros and Cons
Pros
- High yield potential (heavy cropping)
- Good storage capabilities for long-term use
- Early maturity reduces waiting time
- Consistent and appealing golden skin
- Versatile for various cooking applications
- Suitable for both indoor and outdoor sowing
Cons
- Requires indoor sowing for best early results
- Needs specific storage conditions to maintain quality
- Thinning is necessary for bulb development
- Requires hardening off before planting outdoors
Setup, Compatibility & Care
Sowing Indoors:
- Fill seed trays or modules with moist seed compost.
- Sow seeds thinly and cover lightly with compost.
- Maintain a warm temperature (15–20 °C) for germination.
Growing On:
- Keep seedlings in a bright spot, out of direct sun.
- Transplant seedlings into trays of potting compost when they are large enough to handle, spacing them 5 cm apart.
Hardening Off / Planting Out:
- Gradually expose plants to outdoor conditions for 2–3 weeks before final planting.
- Plant outdoors in their final positions, spaced 15 cm apart with 30 cm between rows.
Sowing Outdoors:
- Sow seeds thinly in a pre-watered shallow row.
- Lightly cover with soil and keep moist, especially during dry spells.
Thinning:
- Once seedlings appear, thin them to 15 cm apart to allow bulbs to grow to full size.
Harvesting & Storing:
- Lift onions when the foliage starts to yellow and fall over.
- Spread them out on a clean surface in a well-ventilated area (like a shed or garage) to dry thoroughly.
- Store in cool, dry, and dark conditions.