Growing (Louisiana) iris seed
The recommended procedure for starting Louisiana iris seed is to soak
the seeds in water for 1 or 2 days then plant in pots about 1/2 inch deep
in a standard potting mix. You can put as many as 50 seed to a 6 inch
pot. Water well and then sink the pots in the ground to over winter in a
sheltered place. Water once a week if not watered by rain. They can
take any where from 2 weeks to two years to germinate. A cold period is
not required. The seedlings can be transplanted directly to the garden
when 6 to 8 inches tall. Alternatively, the seeds may be sown directly
in the garden. A soluble fertilizer will help the growing seedlings.
They should be protected from freezes. (Temps less than -4 deg C (25 F)
will kill.) You should get blooms in two years.
My first Louisiana seedlings bloomed this season. There weren't any
future prize winners, but what a thrill!
Yes, please tell us about any native irids (No NZ native iris that I know
of) and what types of iris are popular there.