🌿 Asparagus 'Connover's Colossal'

Sowing window (UK)	March to April
Minimum soil temperature	10°C at seed depth
Sowing depth	3 cm
Spacing	45 cm apart
Days to germination	21 days
Days to harvest	730 days
Sowing method	Direct sow outdoors
Frost hardy	Yes
Sun	full-sun
Watering	moderate
Plant family	Asparagaceae

When should I sow Asparagus 'Connover's Colossal' in the UK?

In the UK, sow Asparagus 'Connover's Colossal' from March to April. It is normally sown direct outdoors. Wait until the soil has reached 10°C at seed depth rather than going by the calendar - asparagus will sit and rot in cold ground.

What soil temperature does Asparagus 'Connover's Colossal' need to germinate?

Asparagus 'Connover's Colossal' needs a minimum soil temperature of 10°C at seed depth to germinate reliably. Below that, germination is slow and patchy, and seed is more likely to rot than sprout. Measure at around 5cm down, in the morning, rather than trusting air temperature.

How deep and how far apart should I sow Asparagus 'Connover's Colossal'?

For Asparagus 'Connover's Colossal', sow it 3cm deep and space plants 45cm apart.

How long does Asparagus 'Connover's Colossal' take to grow?

Asparagus 'Connover's Colossal' takes roughly 730 days from sowing to harvest. Seed usually germinates in about 21 days.

Is Asparagus 'Connover's Colossal' frost hardy?

Yes. Asparagus 'Connover's Colossal' is frost hardy and will stand through UK frosts, so it can be left out over winter in most of the country.

Sowing data cross-checked against RHS growing guides and UK seed-merchant catalogues. Soil temperatures are the minimum for reliable germination, measured at seed depth.