Look to ensure a distance
11.7 inches (30.0 cm) between Siloam Ury Winniford seeds when sowing to make sure your seedlings have enough space.
By our calculations, you should look at sowing Siloam Ury Winniford about 42 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Siloam Ury Winniford is a hardy plant.