Dyer's woad typically starts flowering in April.
Dyer's woad
Isatis tinctoria
Dyer's woad (Isatis tinctoria) is an invasive Eurasian plant species with bright yellow flowers and somewhat woody stems. It's been used for centuries to make blue-green dye for fabric and clothing, and is found in disturbed areas such as roadsides, gardens, and waste areas. Dyer's woad adapts easily to various types of soil and prefers full sun, although it will tolerate moderate shade. As an invasive, it can crowd out native plants and severely diminish biodiversity, so it should be carefully controlled and monitored.
Cycle:
Herbaceous Perennial
Watering:
Average
Propagation:
Seed Propagation,Division,Cutting
Hardiness Zone:
4 - 8
Flowers:
Yellow Flowers
Sun:
Full sun
Leaf:
Yes
Leaf Color:
green
Growth Rate:
Low
Maintenance:
Moderate
Poisonous To Humans:
Yes
Poisonous To Pets:
Yes
Drought Tolerant:
Yes
Invasive:
Yes
Care Level:
Medium
watering
Dyer’s Woad is a moderately drought-resistant plant that requires regular watering for best results. In well-draining soil, water the plant deeply once a week in warm weather and every 2 weeks in cooler weather. In summer, water more frequently if the leaves begin to wilt. During the winter, allow the top 2 inches of the soil to completely dry out between waterings.
sunlight
pruning
Dyer's woad (Isatis tinctoria) should be lightly pruned in late spring and mid-summer. Pruning should be done just after flowering to encourage bushy growth and remove any dead or damaged branches. Generally pruning should remove no more than 1-third of the plant's foliage. This will ensure that new growth is encouraged. Make sure to prune branches close to whole buds to encourage new growth in the desired shape.
Season
Fall
Winter
Spring
Summer
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Starts Flowering
