reticulata irises

Jane McGary
Sun, 20 Mar 2016 09:05:49 PDT
My practice, which seems to be effective, is to apply nutrients to 
early-growing bulbs lightly in fall (autumn) and more heavily during 
early to mid spring. However, this reflects the weather cycle where I 
live on the Pacific coast of North America, when cool, wet weather 
begins in October and continues, with only intermittent frosts, through 
winter and spring. Bob Nold is gardening in Denver, Colorado, which has 
an entirely different annual cycle.

I remember the great grower Fritz Kummert saying that bulbs that grow 
following snowmelt can tolerate, and indeed may require, much moisture 
and nutrition during their growth spurt from late winter to early 
spring. Last spring I had the opportunity of seeing many snowmelt bulbs 
in the Caucasus and eastern Turkey, and the soils in which they were 
growing were often saturated, with many of the finest populations of 
bulbs near seasonal streams where one assumes mineral nutrients are 
especially available during runoff.

Jane McGary
Portland, Oregon, USA

On 3/20/2016 8:54 AM, penstemon wrote:
>> I use dolomitic limestone dust ( magnesium carbonate), but yes.
> At what time would you feed them? My inclination would be to feed after the flowers fade.
> Or does it make a difference?
> Bob Nold
> Denver, Colorado, USA
> _______________________________________________
> pbs mailing list

More information about the pbs mailing list