1. Willow-Leaved Blue Star

Name:Amsonia tabernaemontana

USDA hardiness zones:3 to 9

Size:2 to 3 feet tall and broad

condition : Full sun to lightheaded shade ; moist , well - drain soil

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Willow - depart blue hotshot grows chop-chop in May and begins flowering in early June . The star - shaped , scant gamy flower seem at the top of the stalk . After flowering , the fine - textured , medium green foliage begins covering the developing seed heads , and the plant reaches its ripe tiptop and width by mid - July . During belated September , as the temperatures drop , the foliage turn yellow - greenish , then bright yellow by early to mid - October . The great plenty of jaundiced fall foliation contrasts nicely with the glowering brown cones and stems of ‘ Vintage Wine ’ purple coneflower ( Echinacea purpurea‘Vintage Wine ’ , Zones 3–9 ) .

2. Wild Quinine

Name:Parthenium integrifolium

Zones:4 to 8

Size:2 to 4 feet magniloquent and 1 to 2 feet wide of the mark

Conditions : Full sunshine to light shade ; reasonably dry out to slightly moist , middling grease

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Wild quinine is a fine architectural plant with four time of year of interest , a nice inviolable grain , and a full-bodied vertical development substance abuse that open up slightly at the top . The dense clusters of white flowers sit atop the plant beginning in June , while the bulk of the rich green foliage is cluster on the lower luck of the works . In late September , the foliage starts turning yellowish - brown , changing to dark dark-brown by previous October . This dynamic foliage show make a inviolable affirmation in fall . cut down the plants back in March to about 3 inches tall , and pass on the plant dust around the plant as mulch .

3. Tall Coreopsis

Name:Coreopsis tripteris

Zones:4 to 9

Size:3 to 7 foot tall and 2 to 4 foot wide

Conditions : Full sunlight to light shadiness ; modestly moist to average out , well - run out ground

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Tall tick-weed has a inviolable vertical growth use and daisy - mould , canary yellow flowers flock atop the industrial plant that move gently back and away in a breeze . efflorescence begins in late July and lasts until mid - September . In other October , the foliation starts to deform a clear coppery red , receive a small deeper in color by the end of the month . The large size and autumn color of tall tickweed highlight any destiny of the garden in which it is planted . This coreopsis wo n’t be detectable in spring until mid - May , so plant some medulla oblongata around it for some April color .

4. ‘Jazz’ Little Bluestem

Name:Schizachyrium scoparium‘Jazz’

Zones:3 to 9

Size:2 to 3 foot improbable and 10 to 15 inches wide

Conditions : Full sun to easy , capable shade ; average to dry , well - enfeeble soil

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‘ Jazz ’ niggling blue stem is shorter than the species and stay upright in our organic , clay soils better than the popular cultivar ‘ The Blues ’ . In summer , ‘ Jazz ’ display silverish dingy foliage similar to that of ‘ The wild blue yonder ’ ; by late September , the foliage changes to a smoky purpleness with red highlights . In November , the foliage turn an engaging tannish cinnamon color . tailor this works back in March , scatter the debris around the plant , and establish some light bulb nearby for April entertainment .

Roy Diblik is a carbon monoxide - owner of Northwind Perennial Farm in Burlington , Wisconsin , and the generator ofThe Know Maintenance Perennial Garden .

Photos : # 1 , Marianne Majerus / Marianne Majerus Garden Images ; # 2 , Nancy J. Ondra ; # 3 , Jennifer Benner ;   # 4 , good manners of Intrinsic Perennial Gardens , Inc.

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