How long does it take for woad to germinate?

Question:

Answers:
First, a strong word of caution: woad is an invasive, and will inhibit the germination of the seedbearing plants surrounding it.

Now, to answer your question:

"Dyers woad spreads by seed. The seed pods fall to the ground intact. Winter chilling is necessary before flowering. Seeds develop anywhere between 4 to 6 weeks, and up to 8 weeks after the flowering stem appears, depending on site conditions. Each plant can produce from 350 – 500 seeds, and some plants produce as many as 10,000 seeds (James et al. 1991). The seeds lack dormancy, but they are affected by a water soluble germination inhibitor that leaches out over time. Seeds are viable in the soil for years. 1% of fall germinated plants flower the first spring, 35% of the plants survived the second winter, and half of these flowered the following spring, 12% flowered the third spring (McConnell et al. 1998)."

Happy Gardening!