Allium
Culture Sheet
Grade #1
Container:
Premium 1 Gallon Pot
When to Plant:
Early spring to early summer
Finish:
11-13 weeks
Grade #2
Container:
Premium 1 Gallon Pot
When to Plant:
Early spring to early summer
Finish:
12-14 weeks
Growing Temperature:
60-65° F
Holding Temperature:
50-60° F
Soil PH:
5.5-6.2
EC (What is EC?):
2.0-3.0 pour through method
Fertility:
Once plants are established, provide constant liquid feed at 125-150 ppm.
For Controlled Release or Slow Release Fertilizer, see your preferred supplier for recommended rates for incorporation or top dressing, as it varies by fertilizer.
Vernalization:
6-9 weeks of temperatures below 40° F are required.
Pests & Diseases:
Onion flies (Delia), stem nematode (Ditylenchus), onion thrips. Smut, rust, smudge (Colletotrichum), onion white rot (Sclerotium), bacterial soft rots (Erwinia).
Potting & Timing:
Plant in a well-drained soilless media.
Moisture:
Allow Allium to dry slightly between waterings.
Planting Level:
Place crown just at or slightly below soil level.
PGRs/Pinching:
No PGRs are necessary if grown under proper conditions.
Timing Trial | Planted wk 7, Photo wk 22 | Result: 15 Weeks
Timing Trial | Planted wk 10, Photo wk 23 | Result: 13 weeks
Timing Trial | Planted wk 13, Photo wk 24 | Result: 11 Weeks
Timing Trial | Planted wk 16, Photo wk 28 | Result: 12 weeks
Timing Trial | Planted wk 19, Photo wk 31 | Result: 12 Weeks
Timing Trial | Planted wk 22, Photo wk 33 | Result: 11 Weeks
Timing Trial | Planted wk 25, Photo wk 34 | Result: 9 Weeks
Timing Trial | Planted wk 28, Photo wk 39 | Result: 11 Weeks