Rebloom here in my Southern Ontario (USA Z4) garden is becoming more frequent - even predictable with some cultivars. When I first started to focus on daylilies back in the mid 1990's it didn't take me long to realize that there were reblooming daylilies - but, mostly for Z6 & 'further south' (ie - 'Warmer regions') ... Nowadays RE cultivars are becoming much more common in both tets & dips for US Z4 (Cdn Z5) gardeners. There are now even developments toward 'Everbloomers' (Which I'll mention later ...)
These are my most reliable RE plants over the last few seasons (I focus on only diploids) - Red Dundancy + Stella's Ruffled Fingers + Little Wine Cup + Early And Often + Pardon Me + Precious de Oro + Frequent Flier + Stella de Oro + Apricot Sparkles + Rosy Returns + Black Eyed Stella + Sweet Seneca Returns + Purple de Oro + Endless Heart (aka 'Jersey Early Bird Cardinal') + Stella Supreme (NR) ....
I do have RE from others that are less predictable hereabouts such as - Mini Pearl + Penny's Worth + May May + Twist Again + Fragrant Treasure + Mignon + Pink Embers + Happy Returns + Sunset Returns + Stephanie Returns + Dynamite Returns + Red Hot Returns + Three Seasons ...
Two recent additions showing good RE here are Jersey Bounce & Da Kapo ... Also a few of Mike Huben's near-white reblooming (for him) introductions began showing RE here this past season .... I also have a reliable reblooming plant marketed as Ruby de Oro (NR) that presents a problem. I have purchased several plants over a few years (Research?) and found that they were sometimes simply renamed existing cultivars (ie - Pardon Me & Eenie Fanfare) ... However, 3 of several plants trialed are consistent RE types (Similar to Pardon Me - but seem to be stronger rebloomers here -?).
Continuous Re types now being tagged as 'Everbloomers' will become more available in the near future it seems. Some are here now for USA Z6+ ... App's Endless Heart is marketed as Jersey Early Bird Cardinal with over 100 days of bloom predicted. (I expect more such everblooming cultivars to come on the market under the Jersey Early Bird marketing label.) ... Mike Derrow has several introductions & seedlings that rebloom multiple times across the months of his West Virginian summers. With time, breeders will create cultivars that will similarly bloom repeatedly in our cooler Z4 US & Z5 Cdn regions.
Plant breeders with a vision & a plan achieve some great breakthroughs .... Those of us old enough to recall the garden geraniums (Perlagoniums) (sp?) of the 50's & 60's with their sporadic & inconsistent blooming very much appreciate the modern summer-long bloom displays we now take for granted.
- MGP
