Day lilies ( Hemerocallis spp . ) unremarkably bloom for three to four weeks , but nuance , drought , too much fertilizer or crowding can prevent flowering . These perennials grow in good clumps 6 to 36 inches tall and 18 to 24 column inch encompassing , and grow in U.S. Department of Agriculture plant hardiness zones 3 through 9 , depending on the variety . select daytime liliesthat thrive in the turn conditions in your garden gives the secure probability of plentiful bloom .
Shady Spots
Day lily growing in shady spots blossom seldom or not at all . These plants flower well in site that receive eight hours of unmediated sunlight per Clarence Day . Day lilies grow healthily in partially shaded web site , but you ’ll see few flush .
get day lilies in an area of the garden that receivesat least six hour of sun . In mild and cold climates , such as USDA zones 7 and grim , there ’s no maximum amount of sunlight Clarence Shepard Day Jr. lilies can tolerate . In USDA zones 8 and above , the plants originate and blossom well with light shade , such as from a high canopy , at midday and into the good afternoon . If your day lily are turn in a shady site , take away beetle arm and other reservoir of subtlety , or view transfer the plants to a brighter part of the yard .
Dry Soil
Dry soil and menstruum of drought keep flowering in day lily . chubby source mean day lilies can hold out dry territory and drought , but the plants often lose their flower buds in these conditions .
Moist soils rich in organic matter are best for arise daylight lilies . Spread a 3 - inch layer of gardencompost , leaf cast or well - aged manurearound the plants , butdon’t pack the mulch against the day lily stems because this can induce decompose . Over metre , worms and other dirt being will break the mulch down and enrich the soil .
Waterday lily when the soil control surface is ironic . Spray urine from a garden hosepipe fit with a soft nebulizer attachment at the flora bases to get across dumb clumps . discontinue watering when the water begin to pee on the soil surface .

Excessive Fertilizer
Day lilies do n’t need much fertilizer , and excessive plant food can boost leafy growing at the expense of flowers . flora getting too much fertiliser often havelush , deep green leavesand look healthy but wo n’t flower . Day lily growing in a boundary line next to a lawn can accidentally receive lawn fertilizer .
Do n’t fertilize solar day lilies that front healthy but are n’t flower and do n’t spread lawn fertilizer within 2 feet of day lily .
Crowded Plants
Dividing crowded day lily promote strong maturation and florescence . Reduced bloom is a sign that twenty-four hour period lilies need dividing . This can happenevery two or three yearsor up to every 20 years , depending on the variety . you could divide twenty-four hours lily at most clock time of the year , but the usual time for dividing plants is outpouring before newfangled growth starts .
grind up Clarence Day lily clumps with a garden crotch , andsplit each clumpinto three or four section . you’re able to do this by push two garden forks down through the leaf and into the root ball , then levering the garden forking asunder , or you’re able to thin through the base ball with a sharp , clean knife . Plant the sections at their original growing depth and 18 to 24 inches apart .