1.Blue Mistflower
Name:Conoclinium coelestinum(syn.Eupatorium coelestinum)
USDA Hardiness Zones:5 to 11
sizing : Upto 3 feet improbable and wide
weather : Full sun to partial tone ; fair , well - drain soil

Blue mistflower grows in ditches all over the Southeast , making it a proven roadside plant . Do n’t treat it as a weed , though . Its beautiful blue - purple flower blush on wet root in mid- to late summer through fall . It fan out by source but has n’t misbehaved in my garden , providing just enough division to partake with others . It also form a great cut blossom to pair with a bit of Queen Anne ’s lace ( Daucus carota , Zones 3–9 ) .
2. Tennessee Coneflower
Name:Echinacea tennesseensis
Zones:3to9
Size:2to3feet tall and2 feetwide
Tennessee coneflower is a rarified mountain in the wild , but I ’ve grow it successfully for several year . It loves the full sun that roadside propose and is adaptable to a ambit of conditions . Its dark mauve - pink heyday have upturned , ray of light - make petals — very distinct from other coneflower — and attract visitor and passersby alike . Keep it away from other coneflower to avoid hybrid - pollination .

3. Maximilian Sunflower
Name:Helianthusmaximiliani
Zones:4 to9
sizing : Up to 10feet tall and4 to 5 animal foot wide
Conditions : Full sun;average , well - drained filth

Maximilian sunflower is often found acquire in roadside expanse , in open fields , and along fencerows from Canada to Texas . Its hardy , fibrous ascendent system will form colonies of bright , cheery yellow blooms in summertime , allow raft of pollen for butterfly and bees . Its seeds are a paradise for goldfinches . Though tall and floppy in the wind , plants can be managed by cutting them midway down in other summertime .
4. White Beardtongue
Name:Penstemon digitalis
Zones:3 to 8
Size:2to4feet tall and 1 to 2 animal foot wide-eyed
Conditions : Full sun to fond shade ; median , well - drained soil

White beardtongue is a tough , long - lived perennial . It ’s aboriginal to many sphere in the United States , but the plants in my garden were wreak here by my begetter from a plant- and rock - purchasing tripper to Arkansas . He transplanted a few plant life in the pace and then scatter some seeds . Now , 40 age later , a beautiful stand of white flowers salad days on stiff , tall stems in former May and early June . clean beardtongue transplants well in most gardens but also grows well in containers .
Rita Randolph owns and operate Randolph ’s Greenhouses in Jackson , Tennessee .
Photos : ( 1 and 4 ) , Jerry Pavia ; ( 2 ) , Bill Johnson ; ( 3 ) , courtesy of Jeff McMillian , USDA - NRCS Plants Database

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