Rebloomers
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The reblooming abilities of iris are at the stage roses were some 80 - 100 years ago. Fortunately, in the last two decades a number of breeders in the USA have made concerted efforts to produce new hybrids that will rebloom, but not happy to rest on their laurels, some are now hybridizing for rebloom in colder climates.
When one thinks of rebloom, it is usually with a second set of spikes sometime between August and October, but if the genetic makeup and microclimate in which the iris are grown is conducive, then rebloom can occur at almost any time of the year.
Bearded iris are what are expected to rebloom, but in recent years some Siberians have exhibited this tendency as well. If you can get iris to rebloom, then you will be getting more value for your money and for your garden space.
Clive Russell
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