The Hyssop genus ( Hyssopus ) belong to to the mint family ( Lamiaceae ) and contain several metal money of herbaceous perennials . These plants typically fly high in ardent climates and broadly speaking choose sunny location . base gardeners should select Hyssop works fit in to plant hardiness , prime time , intend economic consumption and general refinement . Many Hyssop plant varieties do well in American gardens .
Yellow Giant Hyssop
The scandalmongering giant hyssop ( Agastache nepetoides ) bloom ear of little , yellow - green flowers from July through September . This fast - growing variety feature arrowhead - shaped leaf and long , stiff stems that reach up to 6 feet in height . Yellow giant hyssop tolerate the hot , humid summers of the American South . This low - maintenance plant opt rich , moist soil . gardener often engraft yellow jumbo hyssop works in butterfly garden , perennial borders and woodland gardens .
Anise Hyssop
The anise hyssop plant ( Agastache foeniculum ) naturally occurs in the American Midwest and Great Plains region . This Hyssopus officinalis species forms clumps browse from 2 to 4 feet in height with slimly little spreads . lilac-colored to deep purple flower spikes efflorescence from June through September . This plant also bear straight stems and fragrant , dull fleeceable leaves . Anise hyssop flora perform best in fully sunny locations with skillful drain . Powdery mildew and rusting sometimes occur in poor - draining soils . The anise Hyssopus officinalis works well in butterfly gardens , wildflower meadows and herbaceous plant gardens .
Blue Giant Hyssop
The blue giant Hyssopus officinalis ( Agastache foeniculum ) , sometimes called the lavender Hyssopus officinalis or the fragrant gargantuan hyssop , bears oval , aromatic leave-taking with gullible top and tripping underside . This ornamental plant ranges from 2 to 4 feet in stature . Purple to blue bloom bloom in July and August . This plant prefers well - debilitate , sandy soils . Gardeners often practice the blue giant Hyssopus officinalis in butterfly stroke and hummingbird gardens .
Purple Giant Hyssop
The purple elephantine hyssop ( Agastache scrophulariifolia ) naturally occurs around thickets and woods in the Eastern United States ( U.S. ) . This hyssop species blossom from July through September , displaying spikes of red to purple flowers with deep purple bloom bracts . Stiff , purplish - dark-green stems reach up to 5 foot in altitude . The oval , green leave have pale undersides . The purple elephantine hyssop make a nice addition to a butterfly garden .
Water Hyssop
The water hyssop ( Bacopa monnieri ) , sometimes known as the herbaceous plant - of - grace , is a semi - aquatic plant that belongs to the snapdragon family ( Scrophulariaceae ) . This hyssop variety have shiny , unripe leave of absence and bell - shape , bloodless flowers that bloom from April through September . These white blossoms sometimes have blue or pink tints . weewee hyssop reaches less than 12 inches in meridian and often forms dense mats when engraft in damp soils . Gardeners often use the water Hyssopus officinalis in ponds , flow margins , peat bog and water gardens .
Hyssopus Officinalis
Hyssopus officinalis of course occurs in Europe , but typically execute well in warmer American landscape . This shrubby Hyssopus officinalis species get hold of between 18 and 24 inches in meridian with slightly smaller spread . Spikes of vasiform , blue - purple blossom with showy stamen bloom from June through September . This variety also endure thin , redolent leaves . Hyssopus officinalis plant brook some drought condition once established . Hyssopus officinalis plants influence well in container , herb garden or careen garden .
