| Home | Back to Seed Index |
| Some Abbreviations Used |
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A: Annual - a plant which lives one year only from seed. P: Perennial - a plant which comes back every year. H: Indicates a plant hardy in northern zones. T: Indicates a tender plant, shrub (sh), or tree (t) which will not winter over in northern zones. IS: In Situ; can be planted outside directly where it is to grow. JC: Just Cover; barely cover with soil SS:Surface Sow; press seeds gently into to the soil to make good contact, but do not cover with any additional soil; these seeds require light to germinate. L/D: Light or Dark; seeds which require dark should have the flat covered with newspaper or brown paper or something similar to keep light from getting to the seeds. Plants requiring light to germinate are to be surface sown. S/I: Germination is slow and irregular HH: Half hardy. If an annual, it will usually not reseed itself in northern zones, and if perennial, will be killed by freezing temperatures. TP: Tender perennial (or shrub, etc). Will not winter over in northern zones, but makes a good greenhouse specimen. GHS: Tropical or delicate plant best grown in greenhouse. BB: Bulb. |
NOTE: The heading 'Medium' refers to a sterile potting soil.
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| Plant | Days for Germination | Light/ Dark | Temp °F | Medium | Depth of Seed | Special Info |
| Abarema (tp) | 7-55 | . | 70-75 | Peaty | ¼" | #1 |
| Abelmoschus (hha) | 15-30 | . | 70-75 | . | 1/16" | #2 for 1 hour in lukewarm water before sowing |
| Abies (ht) | 21-30 s/i | L | 68-75 | Peaty | SS | #2 overnight then #3 for 21 days |
| Abutilon (hhsh) | 21-30 s/i | . | 70-80 | Peaty | JC | . |
| Acacia (hhsh) | 21-30 | . | 70-80 | . | 1/16" | Soak in warm water for 4 to 6 hours |
| Acaena (hp) | 30-100 | . | 50-60 | . | ¼" | . |
| Acanthus (hp) | 21-25 | . | 50-55 | Peaty | ¼" | . |
| Acer (ht) | 30-365 s/i | L | 65-70 | Peaty | SS | #2 for 2 days then #4 for 2 months warm and moist, followed by 2 months cold |
| Achillea (hp) | 30-100 s/i | L | 60-65 | . | SS | Lower soil temp at night |
| Achimenes (tp) | 21-30 | . | 65-75 | . | SS | #5 and See Begonia |
| Acnistus (hhsh) | 21-42 | . | 55-65 | . | 16" | . |
| Aconitum (hp) | 5-270 s/i | L | 55-60 | . | 1/16" | #3 for 6 weeks and See Bonsai |
| Actaea (hp) | 30-365 s/i | . | 55-60 | . | JC | #3 for 6 to 8 weeks |
| Actinidia (hp) | 60-90 s/i | . | 50 | . | 1/8" | Male and female flowers appear on separate plants |
| Adansonia (tsh) | 21-365 s/i | . | 70-80 | Peaty | 1/16" | #2 |
| Adenanthera (tsh) | 30-90 | . | 70-75 | . | JC | #2 in hot water |
| Adenium (tsh) | 7-14 | L | 65-70 | Very well drained | JC | . |
| Adenophora (hp) | 30-90 s/i | . | 50-55 | . | SS | . |
| Adonis (ha, hp) | 30-120 s/i | . | 60-65 | . | JC | . |
| Aechmia (tp) | 7-90 s/i | L | 60-70 | Peaty | SS | See Begonia |
| Aethionema (hp) | 30-90 s/i | . | 60-65 | . | JC | . |
| Agapanthus (hhp) | 30-90 s/i | . | 60-65 | . | JC | . |
| Agastache (hp) | 30-90 | . | 55 | . | 1/16" | . |
| Agave (tp) | 30-90 s/i | L | 55 | . | SS | . |
| Ageratum (hha) | 10-14 | L | 70-75 | . | SS | |
| Agrostemma (ha) | 14-21 | . | 55-65 | . | 1/8" | Can be sown directly outside (IS) |
| Ailanthus (ht) | 30-90 s/i | L | 50-60 | . | SS | #1, #2, then #3 for 2 weeks |
| Akebia | 30-180 s/i | L | 50-60 | Peaty | SS | #3 for 4 weeks |
| Albizia (ht/hsh) | 30-90 s/i | . | 65-75 | . | 1/8" | #2 for 12 hours in tepid water. |
| Alchemilla (hp) | 21-30 | . | 60-70 | . | 1/8" | . |
| Allium (hbb) | 30-365 | L | 50 | . | JC | #3 for 4 weeks |
| Aloe (tp) | 30-180 | L | 70 | . | SS | . |
| Alonsoa (hha) | 14-21 | . | 60 | . | 1/16" | Cover seed with silver sand |
| Alpina (tp) | 30-90 | . | 70-75 | Peaty | 1/8" | . |
| Alstroemeria (hp) | 30-365 s/i | . | 65-70 | Peaty | 1/16" | #2 |
| Alyssum (ha) | 7-14 | L | 55-75 | Peaty | SS | Can be sown IS |
| Amaranthus (hha) | 10-15 | . | 70-75 | . | 1/16" | . |
| Amaryllis (hhbb) | 21-70 s/i | . | 65-75 | Peaty | 1/16" | Do not dry off in the first year from seed |
| Ammi (hha) | 7-21 | . | 55-65 | . | 1/16" | . |
| Ammobium (hha) | 10-15 | . | 60 | . | 1/16" | . |
| Amorpha (hsh) | 30-120 s/i | . | 50-60 | . | 1/16" | #2 for 12 hours in warm water. |
| Anacampseros (tp) | 30-90 s/i | L | 65-70 | . | SS | . |
| Anacyclus (hp) | 30-60 s/i | L | 55-60 | . | JC | #3 for 3 weeks) |
| Anagalis (hha) | 30-42 | . | 50-65 | . | 1/8" | . |
| Anchusa (ha, hp) | 7-30 | . | 70 | . | 1/16" | Can be sown directly outside (IS) |
| Andromeda (hsh) | 30-60 s/i | L | 50-60 | Peaty | SS | Keep soil constantly moist |
| Androsace (hp) | 30-65 s/i | . | 50-55 | . | SS | . |
| Anemone (hp) | 28-180 s/i | . | 65-70 | . | JC | See Bonsai |
| Anemonopsis (hp) | 30-180 s/i | L | 55-60 | . | SS | Needs lime-free medium |
| Anigozanthus (tp) | 30-90 | L | 60-65 | Peaty | SS | See Begonia |
| Anoda (hha) | 14-21 | . | 55-65 | . | ¼" | Can be sown IS |
| Antennaria (hp) | 30-60 | . | 55-60 | . | JC | Cover with silver sand |
| Anthemis (hp) | 8-14 | . | 70 | . | SS | . |
| Anthericum (hp) | 30-90 | . | 50 | . | 1/8" | . |
| Anthriscus (hp, hb) | 14-21 | . | 55-65 | . | ¼ | Usually sown direct IS |
| Anthyllis (hp) | 30-60 | . | 50 | . | 1/8" | #2 overnight |
| Antigonon (tp) | 21-30 | . | 65-70 | . | JC | . |
| Antirrhinum (hha) | 10-21 | L | 65-75 | Peaty | SS | . |
| Aphyllanthes (hp) | 21-55 s/i | L | 55-60 | Peaty | JC | . |
| Aquilegia (hp) | 30-90 s/i | L | 65-75 | . | SS | #3 for 3 weeks. Grow on at 69° or less |
| Arabis (hp) | 20-25 | L | 70 | . | SS | Can be sown directly out (IS) |
| Arachis (ta) | 7-21 | . | 70-75 | Peaty | ¼" | Best results by placing tray inside plastic bag |
| Araucaria (ht) | 30-60 | D | 55-60 | Peaty | ¼" | Sow immediately upon receipt of seed. |
| Araujia (hhsh) | 90-180 s/i | . | 75-80 | . | JC | . |
| Arbutus (ht) | 60-90 s/i | L | 65-70 | Peaty | SS | #3 for 8 weeks |
| Arctotis (hha) | 21-35 | . | 60-70 | . | JC | . |
| Ardisia (tsh) | 90-180 | . | 75 | . | ¼" | . |
| Arenaria (hp) | 15-30 | . | 55-65 | . | SS | . |
| Argemone (ha) | 14 | . | 65-70 | . | 1/8" | Can be direct planted (IS) |
| Arisaema (hp) | 30-180 s/i | . | 55-60 | . | JC | . |
| Aristea (tp) | 30-90 s/i | . | 55-60 | . | JC | . |
| Aristolochia (tsh) | 30-90 s/i | L | 75-85 | Peaty | SS | #2 for 48 hours |
| Armeria (hp) | 14-21 | . | 60-70 | . | JC | #2 for 6 to 8 hours |
| Arnica (hp) | 25-30 | . | 55 | . | JC | Prefers acid, sandy soil |
| Artemisia (hp) | 30-60 | L | 60-65 | . | SS | . |
| Arum (hp) | 30-190 s/i | . | 55-65 | Peaty | 1/8" | . |
| Aruncus (hp) | 30-90 | . | 55-65 | Peaty | SS | . |
| Arundinaria (hsh) | 30-90 s/i | L | 70 | Peaty | JC | Keep soil constantly moist |
| Asarina (hhp) | 14-21 | L | 65-70 | . | SS | . |
| Asarum (hp) | 7-30 | . | 60-65 | . | 1/16" | Use fresh seed or plant as soon as seed is received. |
| Asclepias (hp, tp) | 30-90 s/i | . | 50-75 | Peaty | JC | #3 for 4 weeks |
| Asparagus (p) | 21-30 | . | 60-70 | Peaty | ¼" | #2, then #1 |
| Asperula (ha) | 30-42 | L | 50 | . | 1/16" | #3 for 2 weeks. Can be sown directly (IS) |
| Asphodeline (hp) | 30 s/i | . | 70-75 | . | JC | . |
| Aster (hha/hp) | 10-14 | . | 65-70 | . | 1/16" | For perennial asters: #3 for 2 weeks |
| Asterolasia (hsh) | 30-180 s/i | . | 55-65 | . | 1/16" | . |
| Astilbe (hp) | 40-80 | . | 65 | Peaty | SS | See Begonia |
| Astrantia (hp) | 30-180 s/i | L | 55-65 | . | SS | #3 for 4 weeks |
| Atriplex (ha) | 9-21 | . | 50-55 | . | 1/16" | Can be sown direct (IS) |
| Atropa (hp) | 21-30 | . | 50 | . | 1/16" | . |
| Aubrieta (hp) | 14-21 | L | 65-75 | . | SS | See Begonia |
| Aucuba (hsh) | 30-90 s/i | . | 65-70 | . | 1/8" | . |
| Azalea (hsh) | 50-90 s/i | L | 55-60 | Peaty | SS | Use plastic bag method. Keep from direct sun. |
© 2001 by Ernestina Parziale
