Hedysarum coronarium - Lightly cover seeds and use 70F, if no germination in 4 weeks, move to the fridge for 3 weeks then back to 70F.
Helenium autumnale "Red & Gold Hybrids' - lightly cover seeds and use F 70, germination in 7-10 days.
Helenium hoopesi - lightly cover seeds and use F 70, germination in 7-10 days.
Helianthemum nummularium - Germination in less than 2 weeks at 73F surface sow-light needed for best results, rapid germination
Helianthus annuus - Germination in less than 2 weeks at 68F, rapid germination
Helichrysum bracteatum - Germination in less than 2 weeks at 75F surface sow-light needed for best results, rapid germination
Helichrysum italicum - Germination in less than 2 weeks at 68F surface sow-light needed for best results, rapid germination
Heliopsis scabra  - Germination in less than 2 weeks at 75F, rapid germination
Heliotropium arborescens 'Mini Marine' - Germination in less than 2 weeks at 68-75F, rapid germination.
Hemerocallis ' Mix' - Sow in a plastic bag with moist seed mix and put in the fridge for three weeks. Then sow by covering seeds and use 55F, germination will start in 2 weeks and will be spread out over a month or two.
Hemerocallis ' Select Tetraploid Mix' - Sow in a plastic bag with moist seed mix and put in the fridge for five weeks. then sow by covering seeds and use 55-65F, germination will start in 2 weeks and will be spread out over a month or two.
Hemerocallis ''Diploid Mix' - Sow in a plastic bag with moist seed mix and put in the fridge for five weeks. then sow by covering seeds and use 55 -65F, germination will start in 2 weeks and will be spread out over a month or two.
Hemerocallis 'Miniature Hybrids Mix' -Sow in a plastic bag with moist seed mix and put in the fridge for five weeks. then sow by covering seeds and use 55 -65F, germination will start in 2 weeks and will be spread out over a month or two.
Hemerocallis 'Tetraploid Mix' - Sow in a plastic bag with moist seed mix and put in the fridge for five weeks. then sow by covering seeds and use 55-65F, germination will start in 2 weeks and will be spread out over a month or two.
Hepatica triloba - sow outdoors in the fall for spring germination
Heracleum sp - Germination in less than 2 weeks at 68F, rapid germination
Hesperis matronalis - Germination is spread out over many weeks at 68F, slow germination
Hesperis matronalis alba - Germination is spread out over many weeks at 68F, slow germination
Heuchera americana 'Dale's Strain' - Surface sow, seed is very small, keep medium moist at all times but not wet. Use glass or plastic to cover trays or pots. Germination at F 65 in 1-6 weeks. for best results hardyplants.com/seed_starting_.html
Heuchera 'Bressingham Mix' - Surface sow, seed is very small, keep medium moist at all times but not wet. Use glass or plastic to cover trays or pots. Germination at F 65 in 1-4 weeks.
Heuchera micrantha - Germination in less than 2 weeks at 68F surface sow-light needed for best results, rapid germination
Heuchera sanguinea 'Crimson' - Surface sow, seed is very small, keep medium moist at all times but not wet. Use glass or plastic to cover trays or pots. Germination at F 65 in 1-4 weeks.
Heuchera sanguinea 'Sanguinea' - Surface sow, seed is very small, keep medium moist at all times but not wet. Use glass or plastic to cover trays or pots. Germination at F 65 in 1-4 weeks.
Heuchera sanguinea 'Slendens' - Surface sow, seed is very small, keep medium moist at all times but not wet. Use glass or plastic to cover trays or pots. Germination at F 65 in 1-4 weeks.
Heuchera sanguinea 'Vivid' - Surface sow, seed is very small, keep medium moist at all times but not wet. Use glass or plastic to cover trays or pots. Germination at F 65 in 1-4 weeks.
Heuchera villosa var. macrorhiza - Germination in less than 2 weeks at 68F surface sow-light needed for best results, rapid germination
Hibiscus acetosellus 'Red Shield' - Soak seeds in hot water for two days, change the water every 12 hours with fresh water. Sow seeds by covering them with seed medium, darkness needed for best germination, use 75F, 10-14 days.
Hibiscus acetosellus 'Red Shield' -Sow outdoors, Germination in less than 2 weeks at 68F, rapid germination.
Hibiscus 'Carolina Red Shades' (5) - Scratch with a nail and soak seeds in hot water for two days, change the water every 12 hours with fresh water. Sow seeds by covering them with seed medium, darkness needed for best germination, use F 75, 10-20 days.
Hibiscus mosheutos 'Southern Bell Mixed' - Scratch with a nail and soak seeds in hot water for two days, change the water every 12 hours with fresh water. Sow seeds by covering them with seed medium, darkness needed for best germination, use F 75, 10-20 days.
Hibiscus mosheutos ssp. palustris 'Mixed' - Scratch with a nail and soak seeds in hot water for two days, change the water every 12 hours with fresh water. Sow seeds by covering them with seed medium, darkness needed for best germination, use F 75, 10-20 days.
Hibiscus syriacus - sow outdoors, Germination in less than 2 weeks at 68F, rapid germination
Hibiscus trionum 'Simply Love' - Scratch with a nail and soak seeds in hot water for two days, change the water every 12 hours with fresh water. Sow seeds by covering them with seed medium, darkness needed for best germination, use F 75, 10-20 days.
Hieracium lanatum - Germination in less than 2 weeks at 68F, rapid germination
Hieracium maculatum 'Leopard' - Lightly cover seeds, germination in 10-25 days at 60-70F. If no germination move to 32-39F for four weeks then back to 65F.
Hieracium umbellatum - Lightly cover seeds, germination in 10-25 days at F 60.
Hieracium villosum - Lightly cover seeds, germination in 10-25 days at F 60.
Hippeastrum (Amaryllis) 'Large Flowering Hybrids' - Lightly cover seeds, use 75F, germination takes 3-5 weeks.
Holodiscus discolor - 4 weeks at 68F, 4 weeks at 39, move to 50 for germination
Hordeum jubatum - Germination in less than 2 weeks at 68F, rapid germination
Hosta 'Mixed' - Lightly cover seeds, germination 7-25 days at F.65 - 85. Can be grown over winter under 24 hour lights with very good results.
Hypericum sp - Germination in less than 2 weeks at 75F surface sow-light needed for best results, rapid germination
Hyssopus officinalus - Germination in less than 2 weeks at 68F, rapid germination if no germination, chill for 2 weeks.
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