A tropic - looking garden filled withcolorful canna lilies(Canna x generalis ) takes regular fertiliser , consistent wet , disease and plague ascendency and some winter caution . With the correct care , canna lily industrial plant , which farm in U.S. Department of Agriculture plant hardiness zones 7 through 10 , reward your endeavour with great , coloured flowers on erect , leafy stalk up to 8 feet tall . The foliation , which occur in bright dark-green to inscrutable purpleness , adds a optic component of its own .
Fertilizer and Water
eat canna lily works once a calendar month with 5 - 10 - 5 fertilizer . For a 25 - foot garden bed , utilize 1/2 cup of granular fertilizer . Sprinkle it onto the soil around the radical of each canna lily then water the garden layer . supply about 1 column inch of urine per workweek . If it has rain , cut back on watering . Soil drains at dissimilar rates depend on the structure of the soil and the mood . Aim to keep the soil consistently moist but not waterlogged and adjust tearing to keep it moist .
Deadheading and Trimming
Cut down each bloom stalk as the last flowers start to die . A pair of crisp pruning shear work on to get through the heavy stalk . Make the cut at the soil line . After the stalk flush , it bring forth seed and begin to fail . thin out the spend husk encourages more peak stalks . Dip your tools in a answer of adequate parts rubbing intoxicant and water system to disinfect them to prevent disease spread .
Winter Care
you’re able to grow canna lily outdoors even if you live in USDA zona 6b or below . In fall , cut back all the foliage and any remaining flush stalks and dig up the rhizomes . Keep them in a dark , cool spot , ideally between 45 and 50 academic degree Fahrenheit until bounce . In USDA zone 7 through 10 , you could leave canna lilies in position year - rhythm but remove any bushed leafage as it appears at the floor . In areas where winter frosts are common , canna lily die back to the ground . Cut out the dead leaf before leap but leave the rootstock in spot .
Pest Problems
Disease Problems
Two fungal diseases can affect canna lily plans : rust fungus and fungous leaf spotlight . Rust appears as light-colored spots on the foliage , often yellow or rusting colored . Fungal folio spot have small damaged spots where the leaf dies . Cut off affected leaf as before long as you fleck a problem . do by rust fungus and leaf spot with fungicide that contain copper color compounds if they do n’t disappear after removing affected leafage . expend 2 liquid snow leopard of concentrated intermixture in 1 gallon of weewee . Spray the folio , take a leak sure to impregnate both sides , every seven to 10 days until the the condition clears up . Keep mass , nipper and pet out from canna until the fungicide dry out completely . ward off spilling or take it on your dress or hide . Wash any sphere that come into striking right away . When you ’re done with the bottle , plug a cakehole in the bottom so no one can put consumables in it .
Root Rot
Root rot , do by inert growing precondition causes overall decline . If you mistrust base rot , dig up a rhizome and seem for kitschy rootage . Mild case can amend with rock-bottom lacrimation , but if the roots are rotten through , supercede the canna lily plants with fresh rhizomes .
References
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