This is the information I've been able to gather on this
plant. Please add any corrections, additions, hints or tips that you have.
Scientific Name of
plant: Allium, 'Sparkler' allium flavum, A. carinatum, A. carinatum 'album'
Common Name of
plant: Ornamental Onion
Indoor/Outdoor
plant: Outdoor
plantUSDA
growing zone: 3 through 9
Conditions for Planting Bulbs:
plant in September or October 3 x deeper than the size of the bulb in compost amended soil. Add three inches of mulch over the top of the bulb to protect from freezing come winter.
Conditions for Germinating
seeds:
Soil Type: 50% compost 50% garden soil
Soil Temperature: 70F for 2 to 4 weeks then move to freezer for 4 to 6 weeks, then move to refrigerator for germination. As soon as they sprout move to a sunny window until time to transplant
Indoor Planting Time: October
Outdoor Planting Time: September or October
Water: Keep moist until germinated
Planting Depth: 1/2 inch
plant Spacing: 8 inches apart
pH: 7
Time to germination: 180 days
Mulch: after flowering with 3 inches of leaf mulch
Light: Dark for germination
Time to maturity: 210 days
Mature
plant Care:
Lighting requirements: Full Sun to Light Shade
Fertilizer requirements: Amend soil with compost at planting
Watering requirements: Moderately drought tolerant
Soil requirements: Well drained soil pH:
Dead Heading: No
Pinching
flower spikes: No
plant spacing: 8 inches apart
Pruning times and amounts: No
Conditions for Blooming: May through June
plant Life Cycle: Perennial
Propogation: Bulbs or
seed Height of
plant: 16 inches
Color of Leaves: blue-green and silvery-green foliage
Color of
flowers: golden-yellow, violet and pure white
flowers,
Special requirements (i.e. dormancy): Heat Tolerant
Notes: Does very well in a mixed
flower bed.