Marie, when all's said and done hostas are quite unstable, not just 'June'. I see sports and reversions on a regular basis. And yes, it behooves one to remove the changed portion, whether it's a sport or a reversion. In the case of a reversion it isn't sufficient to just remove the leaves but you should also excise the entire shoot. Right now I have a 'June' that's showing glossy green leaves, so that's a sport, and I will leave it in place until next year until I am comfortable I have at least a complete shoot, or eye if you will, before I dig up the plant and divide it.

Pieter

Thanks for clarification

if i want to grow on the blue section ( which is a real powder blue) explain again how if do that.

Marie, if it's planted in the ground, dig it up, thoroughly rinse the plant and roots so you can get a clear understanding of exactly where the blue leaves are originating. Take a sharp knife and cut through the crown, making sure you get as much of the roots as you can. Put the remaining plant back in its previous location and I'd put the divided section into a pot, like a one-gallon nursery container, so you can make sure you can keep it properly hydrated and fed. It won't hurt to do a weak application of a transplant fertilizer for the first month or so: feed it weakly, weekly. In late September place the plant pot and all into the ground and let it overwinter, then come next spring you transplant the plant into its permanent location once it has started to break.
Good luck, Pieter.

I have a June that was growing several reversions to Halcyon. I asked and was told to dig out the plant to cut out the reversions. My June is about 4‘ across & is the central plant in a very established & a bit narrow planting bed between my house & a paver walkway with hardy fuchsia on each side of the giant June Hosta that has been in ground for more than a few years. The thought of digging it up was overwhelming. What a mess it would create & such a disturbance. I just couldn’t do it. Instead, I cut the reverted leaves off & tied orange tape around the stalks / stubs of the leaves I cut. When in fall the entire plant was starting to turn to mush from cold, I used a hori hori knife & cut out the sections the orange tape was tied to. Those sections had roots so I planted them in two separate locations. I now have 2 great Halcyon hosta. One of those 2 transplants had some June roots attached & it’s a combo June / Halcyon plant but I’m ok leaving it as is. The original June is the one I wanted to keep ’pure’. It’s doing well, looking great & currently has no reversions. I do check it as it leafs out each year to check for reversions.

4’ ?!

i have a dozen ( msny dividions ) not a one is over 1.5 freet. i believe it is considered a ”medium” At 4’ you either have a wonderful freak or some fine soil!

Maybe both! I’ll take a picture tomorrow & post it here. I am in WA state - mild winters relatively speaking compared to Boston.

It’s 6’ tip to tip across at widest points.Those are blue mouse ear hosta at both ends of the bed - all came from one little plant I brought with me from our last home when we moved here in 2012. The June has been in ground @ 2015 or so - I’ll have to dig through my garden file. But, maybe this photo of the bed shows why I was reluctant to dig up this hosta & make a mess!

Cutting a reversion out of my June was how I got my Halcycon. And, yes it was a big mess and very heavy to get out. I needed help with it.

debra

@Marie Tulin Boston burbs z 6a & @djacob Z6a SE WI I recommend the method I devised as a work around because it is very hard work to dig up a big hosta! My guess is @Pieter zone 7/8 B.C. is ok with the process I used too.

Oh I think your version is terrific, but I didn’t know about it at the time! Lol 😂

debra

I once dug up a big one and thought i would water it well to reduce transplant shock. i was wrasling that thing out of muddy hole for an hour. i was 25 years younger. i never did that again and thinking about being in that wet hole with the plant, sosking wet and completely covered with mud makes me need to go to bed.

Marie - that’s exactly how I felt when thinking about the advice I’d received to dig up the whole June to cut the Halcyon shoots out of it! I knew I’d have to let the whole plant revert before I’d do that so I came up with my compromise.