J.E. Shields
Wed, 20 Feb 2013 16:44:43 PST
I don't doubt that experienced gardeners can grow arid climate semi-tender 
bulbs in potting mixtures containing composted natural organic 
materials.  It's just alot harder.

It's rather easier to grow dry-climate bulbs in a very lean, gritty 
mix.  It's easier NOT to over-water that way.

Furthermore, these arid-land bulbs are not usually adapted to resisting 
infection by bacteria and fungi that grow in moist situations.  Growing the 
bulbs in mixtures with lots of complex organic materials which microbes can 
metabolize directly but plants cannot use until they have been digested by 
said microbes can lead to problems.

Organic composts in potting mixes promote growth of microbes, including 
potentially pathogenic microbes.  Use at your own risk, and don't say I 
didn't warn you.

Jim Shields

At 12:25 AM 2/21/2013 +0000, you wrote:
>This would have been standard practise at one time. The manure suitably 
>stacked, aged, sieved and mixed with garden soil and sand. Convenient 
>plastic bags of potting compost have not always been available. ;-)
>30 years ago my father (a gardener all his life) used to complain when I 
>bought him bags of JI compost and it had grit in it. He often sieved it 
>out before he used it.
>Brian Whyer, Buckinghamshire, England, zone ~8-ish
> >________________________________
> >From: B Spencer <>
> >To: Pacific Bulb Society <>
> >Sent: Thursday, 21 February 2013, 0:09
> >Subject: Re: [pbs] amarcrinum
> >
> >Well, I said I was inexperienced with this sort of bulbs. That is what an
> >old English book on bulbs said. Manure was dehydrated, from a bag and
> >supposedly composted. It did not smell. I can have the real thing if you
> >want. Lots of horses around. I would not even consider it though except on
> >the veggie garden and only after being  exposed to the elements and worked
> >over by the neighborhood dogs (mine is contained by an invisible fence. I
> >joined the society hoping  to learn from experts like you. What you people
> >know is intimidating.
> >
>pbs mailing list

Jim Shields             USDA Zone 5
P.O. Box 92              WWW:
Westfield, Indiana 46074, USA
Lat. 40° 02.8' N, Long. 086° 06.6' W

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