Being a biennial it germinates and then dies down to a baby tuber until the following year.
The sowing must be kept warm (about 18 to 22°C) and moist for the first 2–4 weeks.  After this period the sowing must be kept at a cold temperature (between –4 and +4°C) for another 4–6 weeks.  This is best achieved by placing in your fridge inside a sealed plastic bag to retain moisture.
Annual or Perennial |
Perennial |
Approx days to flower/harvest |
|
Height |
60-90cm |
Space between plants |
|
When to sow |
|
Seeds per packet |
Approx 25 |