Unwins Connover's Colossal Asparagus Seeds

Succulent asparagus straight from your garden is easier than you may think. It may take two years ...

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This guide is for home gardeners looking to cultivate their own fresh, succulent asparagus. The key benefit is the potential for a delicious, homegrown crop that saves money compared to store-bought options, with spears that can be harvested for 15-20 years. A caveat is the initial two-year wait before the first harvest. Unwins Connover's Colossal Asparagus Seeds are known for producing tasty, succulent spears with fantastic flavor and an early harvesting time, boasting an RHS Award of Garden Merit.

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Model Part NumberConnover's Colossal
BrandUnwins

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FAQs

How long does it take to harvest asparagus from seeds?

It typically takes two years from sowing before you can begin harvesting sparingly. The third year allows for a more substantial harvest.

What are the ideal conditions for growing asparagus?

Asparagus prefers a location with full sun and well-drained soil. Consistent watering and protection from strong winds are also beneficial.

Can I plant asparagus seeds directly outdoors?

While sowing indoors is recommended for better control, seeds can be sown directly outdoors between February and June once the soil has warmed and the risk of frost has passed. However, starting indoors provides a head start and protects young seedlings.

How should I harvest my asparagus?

Use a sharp tool to cut the spears just below the soil's surface when they are ready. Avoid damaging the crown or any emerging spears you intend to leave for growth.

How long will my asparagus plants produce?

With proper care, asparagus plants from Connover's Colossal seeds can crop for 15-20 years, making it a very long-term investment in your garden.

Why is it important to plant asparagus deeply?

Planting relatively deeply helps to protect the developing crown from frost and encourages stronger root development, which is crucial for long-term productivity.

Can asparagus be grown in containers?

While possible, asparagus thrives best when planted in the ground where it has ample space for its extensive root system. Container growing can be challenging due to the long-term nature of the plant.

Troubleshooting

Seeds are not germinating.

Ensure seeds are kept at the correct temperature (15-18°C) and the compost is kept consistently moist but not waterlogged. Check the age of the seeds; older seeds may have reduced viability.

Young plants are leggy or weak.

Seedlings may not be receiving enough light. Move them to a brighter, cool location, but avoid direct sunlight which can scorch them.

No asparagus spears appearing in the second year.

This is normal. Asparagus requires two full growing seasons to establish before harvesting can begin. Allow the plants to develop their crowns fully.

Asparagus spears are thin and spindly.

This can be due to insufficient nutrients, water, or overcrowding. Ensure the plants are in a sunny spot with good soil, adequate watering, and have enough space. Consider fertilizing after the first few years.

Pros and Cons

Pros

  • Provides a continuous harvest for 15-20 years.
  • Offers delicious, succulent spears with excellent flavor.
  • Early harvesting time compared to some other varieties.
  • Decorated with an RHS Award of Garden Merit.
  • Cost-effective over the long term.
  • Adaptable to various cooking methods.

Cons

  • Requires a two-year waiting period before the first significant harvest.
  • Needs a carefully chosen, permanent planting location.
  • Requires specific sowing and hardening-off procedures.
  • Harvesting is initially sparse in the third year.
  • Requires full sun for optimal growth.

Setup, Compatibility & Care Instructions

Sowing Indoors:

  1. Sow seeds individually in small pots filled with moist seed compost.
  2. Plant seeds 1 cm deep.
  3. Keep pots in a warm environment, ideally between 15–18 °C.
  4. Once germinated, grow seedlings in cool, light conditions, avoiding direct sunlight.

Hardening Off & Planting Out:

  1. Gradually acclimate young plants to outdoor conditions over 2–3 weeks.
  2. Choose a permanent site with full sun. Asparagus is a long-term crop, so select its location with care.
  3. Plant the seedlings fairly deeply, ensuring about 5 cm of soil covers the compost in their pots.

Care:

  • Watering: Ensure consistent moisture, especially during dry periods.
  • Weeding: Keep the area free from weeds, which compete for nutrients and water.
  • Fertilizing: A light feed in spring can be beneficial once the plants are established.
  • Site: Asparagus prefers well-drained soil and full sun.

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