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Old 08-02-2019, 02:24 PM posted to uk.rec.gardening
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Default Mixing Garden soil with Ericaceous Peat.

I have just bought a bag of Ericacous Compost to Repot some Camellias
from small pots to larger pots.

It says on the bag the contents are about 80% peat.

As i want to keep the camellias long term in the new pots would it be
advisable to add some ordinary garden soil to provide a range of
*Minerals*, which i have been told are not necessarily in the Peat?

If this is so, what percentage of ordinary garden soil would you suggest
mixing with the Ericaceous Peat please?

Many thanks for any advice.

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Old 08-02-2019, 03:32 PM posted to uk.rec.gardening
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Default Mixing Garden soil with Ericaceous Peat.

On 08/02/2019 13:24, john west wrote:
I have just bought a bag of Ericacous Compost to Repot some Camellias
from small pots to larger pots.

It says on the bag the contents are about 80% peat.

As i want to keep theĀ* camellias long term in the new pots would it be
advisable to add some ordinary garden soil to provide a range of
*Minerals*, which i have been told are not necessarily in the Peat?

If this is so, what percentage of ordinary garden soil would you suggest
mixing with the Ericaceous Peat please?


Measure the pH of your soil and that will tell you (kits from any garden
centre). If it is anything lower than about 5 you are wasting your money
on ericaceous compost and if it is any higher than 7 then it is probably
wise not to add any of your soil to the mix. They hate lime.

You can get special ericaceous plant food which contains the right mix
of minerals to keep them happy. The main thing is that if the soil is
too alkaline then they cannot obtain iron for chlorophyll. All other
nutrients are secondary and it is rare that there isn't enough blown
dust to satisfy their trace elements needs.

--
Regards,
Martin Brown
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Old 08-02-2019, 03:44 PM posted to uk.rec.gardening
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Default Mixing Garden soil with Ericaceous Peat.

On Fri, 8 Feb 2019 13:24:27 +0000, john west
wrote:

I have just bought a bag of Ericacous Compost to Repot some Camellias
from small pots to larger pots.

It says on the bag the contents are about 80% peat.

As i want to keep the camellias long term in the new pots would it be
advisable to add some ordinary garden soil to provide a range of
*Minerals*, which i have been told are not necessarily in the Peat?

If this is so, what percentage of ordinary garden soil would you suggest
mixing with the Ericaceous Peat please?

Many thanks for any advice.


Bearing in mind that John Innes Ericaceous compost is 1 part peat, 1
part sand, 2 parts loam, with a smidgen of flowers of sulphur and
superphosphate, i.e. 25% peat by volume, you could probably add quite
a lot of your garden soil. Of course, it rather depends on the quality
of your soil, but I would think at least an equal amount, possibly
even 2 parts soil to 1 part of your Ericaceous compost. Do you know
the pH of your soil and is it clay? If it's alkaline and/or contains a
lot of clay, then I'd not go beyond 1:1, and if alkaline, add a little
sulphur to keep the resulting mix slightly acid.
https://tinyurl.com/y9lwfh4v but garden centres should stock it.

I quite often add a handful or so of 'Volcanic rock dust' to my
potting mixes, to provide the *Minerals* as you describe them. It's
probably dust from a quarry working a volcanic rock deposit, so should
contain a range of trace elements. https://tinyurl.com/y9ejll2b Garden
centres often have it.

--

Chris

Gardening in West Cornwall, looking E, Sheltered and partially shaded by trees to the W and SW


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