spiraea tomentosa
Steeplebush
Spirée tomenteuse
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Growth Characteristics
Light Requirement
Full Sun More than 6 hours of direct sun a day to [Part Shade] More than 2 or 3 hours but less than 6 hours of direct sun a day
Soil Humidity
Medium Sometimes holds water but for short periods of time to Wet Stays damp all year
Blooming Period July to September
Size 48 to 48
Flower Color None
Habit Shrub
Sowing
Stratification Cold moist 60d
Sowing Depth Surface
Sowing Period
Dormancy need
Ideal For
Easy to germinate
Harvesting
PeriodOctober
Indicator Pods are brown and crisp and starting to open, seeds are dark and tiny stem attaching to the main stem is brown. Seeds easily fall off pod when shaken, and little stem connecting the pod to the main stem is brown (not green)
Harvesting mean Shake seed head in paper bag
Seed Head Head
Viability Test No test needed before donating
Seed Storage Keep moisten and cool, in a ziploc bag, in the fridge, with the seeds in soil, paper towel or coffee filter, until donation
One cultivar Yes, do not donate unless you know source, and there are no known cultivars in your garden or at proximity
Packaging measure Six (6) seeds (eyeball)
Envelope LabelOpen in new tab
Distribution: Asclepias syriaca Linnaeus