Approximately 14000 seeds per gram
seed-counts are only a guide, not to be used for accurate calculations.
B and T World Seeds' reference number:
USDA average, annual, minimum temperature Zone:4
Type of plant - perennial
Flower: deep LAVENDER-BLUE, dense spikes
Fruit: .......................(germ. 1-2 weeks)
Foliage: lance., 7-10cm. long, serrated
Height in meters: 1.2
Pseudolysimachion longifolium seeds may be subject to seasonal availability
Common names for Pseudolysimachion longifolium:
is included in the following B and T World Seeds flowering plant categories:
36: Herb Seed List Culinary Medicinal Dye and Aromatic
43: Herbaceous Border Plant Seed List
44: Cut flowers Commercial and other Recommended Varieties
45: Bee and Butterfly Attracting also Honey and Pollen Plant Seeds
56: Aquatic and Semi aquatic Plant Seeds
72: Russian Native and Introduced Plants (Central)
74: West Asian Native and Introduced Plants
77: Central European Native and Introduced Plants
185: Plant Species whose germination is improved by Smoke
952: Wholesale Selection
Pseudolysimachion longifolium seeds will usually germinate in 15-30 days. Normally will only germinate with light so surface sow. Sow seeds about 1mm deep in a Peaty seed sowing mix at about 20°C.
Reduce soil temperature at night.