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A guide to forcing bulbs in your refrigerator
| GENUS |
BULBS PER 6” POT |
WEEKS @ 40°F |
WEEKS TO BLOOM
@ 60-70°F |
| Allium (small, early types) |
5- 9 |
14 |
varies |
| Crocus |
9- 12 |
14 |
3-4 |
| Hippeastrum (Amaryllis) |
1 |
0 (No chill required) |
5-8 |
| Hyacinthus |
3 |
14 |
3-5 |
| Iris x. hollandica (Dutch Iris) |
6-9 |
6 |
6-8 |
| Iris reticulata (Dwarf Iris) |
9-12 |
15 |
3-4 |
| Lilium - Asiatic |
3 |
10-12 |
7-9 |
| Lilium - Oriental |
3 |
12-14 |
12-15 |
| Muscari (Grape Hyacinth) |
9-12 |
15 |
4-5 |
| Narcissus papyraceus (Paperwhite) |
5 |
0 (No chill required) |
3-5 |
| Narcissus - miniature types |
6 |
14 |
3-5 |
| Narcissus - taller types |
3-4 |
15-16 |
3-5 |
| Tulipa – species and miniature types |
6 - 9 |
14 |
3-5 |
| Tulipa - taller types |
5 |
14 |
4-5 |
| Small Bulbs: Anemone blanda, Chionodoxa, Eranthis, Galanthus, Scilla, Puschkinia, etc. |
9-12 |
12-14 |
3-5 |
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