Astilbe
Culture Sheet
20ct
Container:
Premium 1 Gallon Pot
When to Plant:
Late winter to spring
Finish:
8-10 weeks
Notes:
Amber Moon is the only variety offered in this size.
72ct
Container:
Trade 1 Gallon Container
When to Plant:
Best planted in summer for following spring sales
Finish:
8-10 weeks
Notes:
Amber Moon is the only variety offered in this size.
Grade #1
Container:
Premium 1 Gallon Pot
When to Plant:
Late winter to spring
Finish:
8-10 weeks
Grower Tips:
Astilbe are sensitive to high salts and may become scorched and have damaged roots if the soluble salt levels are allowed to build up.
Apply a broad spectrum fungicide at transplant to prevent root and crown diseases.
Growing Temperature:
55-60° F
Holding Temperature:
45-55° F
Soil PH:
5.8-6.2
EC (What is EC?):
1.5-2.5 pour through method
Fertility:
Feed 75-125 ppm N at each watering.
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:
Required cold for 10-12 weeks at 40° F or below.
Pests & Diseases:
Japanese beetle, whiteflies (in greenhouse), tarnished plant bug, water stress injury.
Bacterial blights, powdery mildew(Erisyphe), wilt (Fusarium)
Potting & Timing:
Begin growing plants cool at 55-60° F for the first week. Increase temperature to speed flowering or lower temperature to delay flowering.
Moisture:
Astilbe require frequent irrigation. If plants dry out, their foliage turns irreversibly brown and crispy, thereby rendering them unsaleable. The most critical growing factor for Astilbe is water. Increase watering as the foliage emerges and plumes mature. Plants should never be allowed to dry out. If the margins of the leaves turn brown and crispy, the plants are not being kept moist enough. Try to avoid watering after mid-afternoon. Shading (shade cloth) will also help reduce stress on the plants.
Planting Level:
Eyes should be just below soil surface.
PGRs/Pinching:
If needed apply Sumagic (Uniconazole) at 5 ppm when flower stems begin to appear above the foliage.
Lighting:
Day neutral
Timing Trial | Planted wk 7, Photo wk 20 | Result: 13 Weeks
Tming Trial | Planted wk 10, Photo wk 21 | Result: 11 Weeks
Timing Trial | Planted wk 13, Photo wk 22 | Result: 9 Weeks
Timing Trial | Planted wk 16, Photo wk 25 | Result: 9 Weeks
Timing Trial | Planted wk 19, Photo wk 28 | Result: 9 Weeks
Timing Trial | Planted wk 22, Photo wk 30 | Result: 8 Weeks
Timing Trial | Planted wk 25, Photo wk 33 | Result: 8 Weeks
Timing Trial | Planted wk 28, Photo wk 36 | Result: 8 Weeks