Care Check­list

Canadian Gardening Annual 2016 - - Profile -

• In spring or late sum­mer, plant iris rhi­zomes (mod­i­fied stems) in a full sun lo­ca­tion in fer­tile, well-drained soil.

En­sure that the up­per sur­face of each rhi­zome is ex­posed to the sun (buried

rhi­zomes won’t flower). • To con­trol iris borer, peel away leaves down to the rhi­zome in early spring to de­stroy any over­win­ter­ing

eggs (do not com­post). De­stroy any rhi­zomes where

borer tun­nelling is ev­i­dent. • In Zones 3 and 4, rhi­zomes may be mulched with dry

straw, pine nee­dles or hor­ti­cul­tural sand for win­ter pro­tec­tion. Di­vide clumps ev­ery four years, five weeks

af­ter flow­er­ing.

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