Seeds to sow indoors in Early May

You thought the indoor sowing season inside was over? Not at all! There are still a lot of plants it’s worth sowing indoors. These are typically the fast-growing plants that should not be sown too early, otherwise they start to stretch indoors, yet they still benefit from a bit of heat early in their development, something you simply can’t guarantee outdoors this early in the year. Here are a few examples:

1. African Marigold (Tagetes erecta)
2. Ageratum (Ageratum houstonianum)
3. Annual Baby’s Breath (Gypsophila elegans)
4. Annual Flax (Linum grandiflorum, L. usitatissimum and others)
5. Annual Gaillardia (Gaillardia pulchella)
6. Baby Blue Eyes (Nemophila spp.)
7. Balsamine (Impatiens balsamina)
8. Basil (Ocimum basilicum)
9. Batchelor’s Button (Centaurea cyanus and others)
10. Brussel Sprouts (Brassica oleracea gemmifera)
11. Castor Bean Plant (Ricinus communis)
12. Celosia (Celosia argentea and others)
13. Chives (Allium schoenoprasum)
14. Cleome or Spider Flower (Cleome hasslerana)
15. Cockscomb (Celosia argentea cristata)
16. Cosmos (Cosmos bipinnatus and C. sulphureus)
17. Felicia (Felicia bergeriana, F. heterophylla)
18. Fennel (Foeniculum vulgare)
19. Flowering Cabbage (Brassica olearcea acephala)
20. French Marigold (Tagetes patula, T. patula x erecta)
21. Garlic Chives (Allium tuberosum)
22. Joseph’s Coat Amaranthus (Amaranthus tricolor)
23. Kingfisher Daisy (Felicia bergeriana, F. heterophylla)
24. Kiss-Me-Over-The-Garden-Gate (Persicaria orientalis, syn. Polygonum orientale)
25. Kohlrabi (Brassica olearcea gongylode)
26. Lettuce (Lactuca sativus)
27. Love-Lies-Bleeding (Amaranthus caudatus)
28. Melon (Cucumis melo)
29. Morning Glory (Ipomoea spp.)
30. Mullein (Verbascum bombyciferum, V. olympicum, etc.)
31. Nolana (Nolana paradoxa, N. humifusa)
32. Perennial Flax (Linum perenne, L. flavum, etc.)
33. Phacelia (Phacelia campanularia, P. tanacetifolia and others)
34. Policeman’s Helmet (Impatiens glandulifera)
35. Pumpkin (Cucurbita pepo)
36. Rodgersia (Rodgersia aesculifolia and others)
37. Spinach (Spinacia oleracea)
38. Squash (Cucurbita pepo)
39. Statice (Limonium sinuatum and others)
40. Summer Savory (Satureja hortensis)
41. Sunflower (Helianthus annuus)
42. Swan River Daisy (Brachyscome iberidifolia)
43. Sweet Alyssum (Lobularia maritima)
44. Sweet Pea (Lathyrus odoratus)
45. Watermelon (Citruillus lanatus)
46. Zinnia (Zinnia spp.)
47. Zucchini (Cucurbita pepo)