Soak seed in water for 12 hours then store at 40F for 4 weeks then lightly cover the seed soil temperature 65-70F for germination in about 21 days & an 10 weeks growing on time to ste out green. count back 13 weeks from time you wish to set out to determine sow date

Thirteen weeks, slow growing little darlings aren't they. But they look worth it to me. Thank you for the information I appreciate it.

Phlox drummondii
Type: Annual
Light: Sun
Soil: Rich, moist, well-drained
Height: 1-1.5'
Spacing: 1'
Season: Summer to fall
SEED:
Depth: 1/16"
Flat temp: 55-65F
Sprout time: 7-25 days
Tip: Sow indoors 6-8 wks before planting out after frost, or outdoors in early spring; fall sow in mild winter areas.
10-12 wks from sowing to bloom.
(as found on select seeds' website)

Cool those directions seem much easier for me. I'm disabled and sometimes I can't make sense of things. Thank you so much for sharing the information.