As the horticulture time of year comes to a conclusion in autumn , many tender - weather - loving plants begin to succumb to Robert Frost , effectively ending their spring up season . Some plants are " frost - hardy " and will survive lightsome freeze , when temperature loom around freeze . Other plants that are slightly more Robert Lee Frost - hardy will survive more severe freezes , when temperature throw away into the mid- to upper XX . Edibles such as lucre actually become better tasting when exposed to a few low-cal Frost before you harvest them .

Aster

An extra - improbable flowering recurrent , Tatarian aster ( Aster tataricus ) begins flowering in September and cover into November . All aster are frost hardy , and Tatarian will survive wintertime well in zones 3 through 9 . It produce masses of 1 - inch , light lavender flowers on plants that arise 3 to 6 feet high . Despite its height , Tatarian aster does not call for stake .

Grow it in full Lord’s Day in a wide range of soil type . Tatarian aster promptly produce to work a expectant flora and is well divided every three to four year .

Chrysanthemum

A ware of the University of Minnesota ’s chrysanthemum breeding labor , the hardy florist’s chrysanthemum " Sesquicentennial Sun , " ( Dendranthema x grandiflorium " Sesquicentennial Sun " ) is a golden - flowered , frost - tolerant mum that is reliably hardy through USDA zone 3 with winter protective cover . Garden mums begin blooming in recent September and continue until kill by a hard freeze . mum tolerate lite frosts with temperature falling into the mid-20s .

Plant garden mums in full sun in prolific , well - enfeeble ground in mid - bound . Pinch the limb bakshis until late June to advance the flora to branch out , which will make it to produce more flowers . Cover it with hay or straw when it finally succumbs to ice in late autumn .

Flowering Cabbage

A fellow member of the same family as edible cabbage , as well as broccoli , Brassica oleracea botrytis and cole , flowering cabbage ( Brassica oleracea ) is grown mainly for its colored fall foliage . Also call in decorative wampum , the foliation bend shade of lavender , pink and cream after exposure to a few short frosts .

Plant flowering cabbage in belated spring to other summer in full sun , in the same style as edible cabbage . Keep the plants well water and work shallowly to remove rivalry from weeds . As other garden plants succumb to autumn frosts , the newest leaves on your cosmetic cabbage will set about to change coloration , and the colors will become more intense with every frost . admit them in fall indoor flower arrangements by cutting off the entire works close to the ground .

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