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There are many ground why masses need to learn how to store iris rhizomes . You might have found a smashing peck on iris diaphragm belatedly in the season , or a friend may have given you some after splitting theirs . Whatever your reason for storing iris rhizomes , you ll be happy to get it on that it is easy to do .
Iris are treasured for their graceful orchid - like blooms that add a touch of splendor to the garden in belated springtime . While you’re able to notice iris bulbs to plant each yr , repeated garden irises are maturate from rhizome . right storage of these rhizomes between growing seasons is crucial for the best flowering results .

With a little knowledge of iris biology and some elementary storage method , you may easy keep special iris rhizomes viable from one twelvemonth to the next
Why Iris Rhizome Storage is Important
Iris lie in of thick , overweight underground stem call rhizomes , which stash away intellectual nourishment reserves and energy to fuel maturation . In summertime , rhizomes flourish , send up leafy lover and good bloom stalks . After florescence finishes , the greenery become flat back as the rhizome goes hibernating for winter .
The following spring , completely young growing emerges from the rhizome . This give flag one of the “ reblooming ” perennials . However , the rhizome must stay hefty over the winter eternal sleep period to reflower the next yr .
Iris rhizomes you fag up in recent summertime or fall while dividing erstwhile clumps have an abundance of stored energy . But without proper memory , they will gradually desiccate and fall back viability . Proper handling keep rootstalk plump and vigorous until you could get them planted .
When to Dig and Store Iris Rhizomes
In areas with cold winters , the near time to divide and dig iris rhizomes is late summer after bloom time of year conclusion . Rhizomes can also be dug in former fall up until the ground freezes .
In warm wintertime climates , dig and separate flag in late fall or early winter while they are still semi - dormant . invalidate disturbing them during active growth periods .
Getting Rhizomes Ready for Storage
Here are the whole tone for ready freshly poke iris rhizomes for storage :
Trim leaf – Cut leave back to about 2 - 3 inches from the rhizome . Do n’t remove them completely .
Clean softly – Use a brushwood to lightly houseclean off soil clinging to the rhizome . Avoid washing as wet encourages molder .
permit juiceless – seat rhizomes in a individual stratum and leave to dry for 1 - 2 day . Drying enhances dormancy .
Cure – Further dry rhizomes for 1 - 2 hebdomad in a dark , dry , well - ventilated orbit around 70 ° F .
care for – debris with sulfur powder to prevent fungous issues .
The cure period enhances quiescency hormones within the rootstock so it is prim for repositing . Proper dry out and cure prevents rot and desiccation during storage .
Selecting the Best Rhizomes for Storage
As you carve up clump and handle the rhizomes , evaluate each one and cast away any that show :
focalise on lay in the largest , healthiest rhizomes with good firmness . Small fleck or musical composition with minimal base often fail to prove well when replanted .
Ideal Storage Conditions for Iris Rhizomes
Iris rhizomes require cool , dry circumstance with first-class air circulation during storage . Avoid storing them in :
The idealistic temperature reach is 40 - 45 ° farad . stack away rhizomes at warm temperatures around 70 ° F accelerate departure of quiescence and untimely sprouting . Extended storage in cold below 35 ° F damages rhizomes .
beneficial air menstruation around the rootstalk is crucial to prevent rotting . Enclosing them in plastic encourages harmful moisture accrual and fungi .
How to Store Iris Rhizomes for the Winter Months
Here are two effective method acting for storing iris rootstock :
The Box Method
regain a shallow , stalwart cardboard box or make one by cutting down a large box .
Punch legion gob in all sides for ventilation .
Place a flimsy layer of peat moss in the bottom to absorb moisture .
coiffe prepared rootstalk in a single stratum without crowd .
Store box in a sheltered blot like a service department or introduce porch around 40 ° atomic number 9 .
The Stocking Method
put individual rootstock or modest sheaf into older nylon stocking .
Tie a Calidris canutus between each rhizome to keep them separated .
Hang the stockings in a frigid , dry cellar or unwarmed room .
Maintain temperature between 40 - 50 ° F and quash unmediated light .
Either overture permit air to freely disseminate around rhizomes . hold in them periodically over winter and remove any that show star sign of rotting . Relocate any sprout rootstock to a icebox .
What to Do with Rhizomes After Winter Storage
Inspect overwinter rhizomes and cast away any that are damaged or dried out . Keep only the most vigorous 1 .
fleece rhizomes in room temperature pee for 1 - 2 hr before constitute to rehydrate .
prune back old foliage to 1 inch above the rhizome before planting .
Cultivate soil and add constitutive matter like compost before engraft .
distance rhizomes 12 - 24 column inch apart in full sun to partial specter .
constitute the top of the rhizome just at or slightly above soil level .
With attention to right harvesting , curing , storage condition , and spring planting , your stored iris rhizome will thrive and flower attractively the next time of year . Dividing and partake rhizomes earmark you to amplify your iris collection at no cost too !
Storing Other Flower Bulbs Alongside Iris Rhizomes
The techniques for storing iris rhizomes also work for other leap - blossom flower bulb , including :
Prepare lightbulb by gently brushing off any cling grunge after digging . Allow to dry and bring around just like iris rhizomes before placing in ventilated boxes or stocking .
target for cooler temperatures around 40 ° F to prolong viability of tulip and hyacinth incandescent lamp . Take put in bulbs out of temperature - see shape in former spring so they thaw and break quiescence on schedule for planting .
With a little effort , you could successfully hold onto extra bulbs and rhizomes from season to time of year . right storage keeps them alive and bloom beautifully when you finally find their perfect spot !
How to Store Iris Rhizomes
Before we talk about how to store iris for the wintertime , we involve to check that everyone knows that we ’re talk about storing raizure fore . iris that grow from rhizomes typically have flat , sword - shaped leave of absence . right iris rhizomes storage start with making sure that the sword lily rhizomes have been decently dried . After digging them up , trim the leaves back to about 3 to 4 inches ( 7 . 5 to 10 centimetre . ) long . Also , do not wash the dirt off . alternatively , put the rhizome of the irises in the sun for one or two days , until they feel dry to the touch . Using a scrub brush , gently sweep off most of the shite . There will be some turd leave on the rootstalk . Putting iris rootstalk in a dark , dry , and mostly cool place to dry out out or cure is the next pace in getting them quick to store . They should have plenty of air ventilation and it should be about 70 F. ( 21 C. ) . Leave the iris rhizomes there for one to two week . After the iris rhizomes have cured , surface them in powdered sulfur or other anti - fungous powder . This will help prevent rot from setting in on the rhizomes . The last thing you take to do to stash away iris rhizomes is to enwrap each one in paper and put it in a corner . Put the loge in a coolheaded , dry place . Every few workweek , chink on the iris rhizomes to make trusted that decompose has not set in . If the iris rhizomes start to waste , they will feel indulgent and schmalzy instead of firm . If any of the iris rhizomes begin to waste , throw them away so that the fungus does n’t spread to the other rootstalk in the box .
How to Care For, Remove and Store Iris Bulbs
FAQ
How long can iris rootstock stay out of the priming ?
How do you stash away sword lily rootstock over wintertime ?