CULT: TB: Rate of bloom & increase

From: "Jeff and Carolyn Walters" <cwalters@digitalpla.net>

Doreen McCabe writes:
> I had only 25% of last years planted iris bloom of abut 150.  And 20 % of
the
> 2 years before.  So to get enough of one type I bought 6.  So hopefully
one or
> two will bloom
> of each of those types.  And my iris are only doubling  of all the ones I
> bought 1 of last year.  So I think it looks lind of scanty.  Is my bloom
rate
> usual?  Is my doubling rate usual?   

Doreen,

The rate of bloom and increase is going to vary widely depending on the
type of iris grown, the soil, climate, situation, and the gardening
practices followed, so it is difficult to come up with a standardized
answer to your questions.

For the sake of comparison, in my experience I would expect to get at least
70% bloom on a first year planting of TB rhizomes, unless there were
unusually unfavorable weather/pest/disease problems. As far as increase
goes, if you mean by "my iris are only doubling" that you are getting two
new fans for every one that you planted the previous year, then that would
be less than I would expect to see. I think an average rate of increase in
my experience would be four to five new fans per clump after one year's
growth. Naturally, it will be more on some cultivars and less on others,
even when they are growing side by side.

Jeff Walters in northern Utah  (USDA Zone 4, Sunset Zone 2)
cwalters@digitalpla.net









------------------------------------------------------------------------
To unsubscribe from this mailing list, or to change your subscription
to digest, go to the ONElist web site, at http://www.onelist.com and
select the User Center link from the menu bar on the left.
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index