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Ragbru
Ragbru
Posts : 7756
Join date : 2013-12-06
Location : In a land full of pretentious buffoons.(I live alone)

Bulb growing compost? Empty Bulb growing compost?

Mon Oct 06 2014, 16:17
What is bulb growing compost? Alright, I know what it is used for. How does it differ from other composts? Anyone know?
Temeluchus
Temeluchus
Posts : 6678
Join date : 2014-01-10

Bulb growing compost? Empty Re: Bulb growing compost?

Mon Oct 06 2014, 16:25
Is it not more free draining, so the bulb doesn't rot?

I don't know, don't tend to buy specialist compost with the exception of ericaceous (sp). That's for the camellias, azaleas, and blueberry bushes.
Ragbru
Ragbru
Posts : 7756
Join date : 2013-12-06
Location : In a land full of pretentious buffoons.(I live alone)

Bulb growing compost? Empty Re: Bulb growing compost?

Mon Oct 06 2014, 16:56
You could be right. I have always used a mix of three parts John Innes No2, to one part horticultural vermiculite, and one part Wicks sharp sand. A mix both free draining and water retentive.

Sharp sand is my substitute for horticultural grit. It is much cheaper. I have read that you cannot use it as it could be dredged from tidal waters, and hence high salt content.

However, I tested by washing it, and letting the drained-off water evaporate from its container, and did not find any trace of salt.

ps I use more or less the same mix for ericaceous, but add sawdust and spent coffee grounds to produce the acidity.
Temeluchus
Temeluchus
Posts : 6678
Join date : 2014-01-10

Bulb growing compost? Empty Re: Bulb growing compost?

Mon Oct 06 2014, 19:44
Interesting; thanks for that. I don't tend to use the coffee maker much now, and when I did the grounds were as slug repellant.
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Bulb growing compost? Empty Re: Bulb growing compost?

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