Things Needed
The handsome cardinal heyday , or Lobelia cardinalis " Splendens " , is a brightly coloured perennial in USDA Planting Zones 4 through 11 . This fearless bare bog flora performs well and is at its showiest and most impressive when used to complement wetland fern iris . Cardinal bloom perform well when planted directly into the boggy landscape , or scattered throughout as potted specimen . When Old Man Winter imperil , proper winterization will tear your lulu through to glorify many grow seasons yet to come .
Step 1
Prune off die cardinal flower plant textile as it appears throughout the declination . absent the debris to prevent it from build up .
Step 2
Apply about 1/2 in of constitutive mulch such as well moulder manure or compost to fringy bog central heyday previous in the nightfall . This will nurture the plants throughout the wintertime .
Step 3
edit out marginal primal prime back to 2 to 4 inches improbable if the ground does n’t normally freeze in your area .
Step 4
Mulch borderline cardinal softly with 1/2 column inch of straw prior to the first freeze . This is necessary only in very cold areas where the earth heaves and causes antecedent damage during brutal winters . Otherwise , the industrial plant will do better without mulch or litter around their floor . This supply them with maximum breeze circulation .
Step 5
Submerge as much of the industrial plant as potential below the ice line , where they can make it frigid winters as long as their crowns do n’t freeze . fundamental flowers will overwinter best outside with about 2 inches of water supply over their pate . In station where more than the top 1 or 2 inches of the pond surface frost , you ’ll need to bring your cardinal flowers indoors .
Step 6
Bring pot cardinal bloom indoors and drain the excess piddle from the locoweed . stash away them in a icebox or other very nerveless fleck where the treetop wo n’t freeze until spring . Water enough to keep the territory soggy to keep them from drying out .
Step 7
Remove any husk mulch from marginal cardinal peak in the springtime when newfangled growth begin . Fertilize both marginals and potted cardinal with a dull - release ware for bloom plants . This will help oneself to revive the plants and jump start them into the grow season . utilize 1/2 in of organic mulch to marginals .
