Posted by Paul M. Cook on June 7, 2010, 5:52 pm
I have a box of Fix-All wall patching compound. It is gypsum, lime, starch
and some other inert ingredients. What would be a good formula for
tomatoes? My tomatoes are growing very fast and setting fruit. I know they
need calcium. Would this be good for other plants like peppers and cukes?
Posted by David Hare-Scott on June 7, 2010, 7:07 pm
Paul M. Cook wrote:
> I have a box of Fix-All wall patching compound. It is gypsum, lime,
> starch and some other inert ingredients. What would be a good
> formula for tomatoes? My tomatoes are growing very fast and setting
> fruit. I know they need calcium. Would this be good for other
> plants like peppers and cukes?
Not unless you know what sort of lime it is (the name represents several
compounds) and what the 'inert' ingredients are and the various proportions.
At a guess it is mostly gypsum (calcium sulphate) which is the core
ingredient in most plaster products. This is pH neutral and supplies
calcium, it is often used as a clay breaker. Other ingredients might not be
so benign.
David
Posted by Paul M. Cook on June 7, 2010, 9:51 pm
> Paul M. Cook wrote:
>> I have a box of Fix-All wall patching compound. It is gypsum, lime,
>> starch and some other inert ingredients. What would be a good
>> formula for tomatoes? My tomatoes are growing very fast and setting
>> fruit. I know they need calcium. Would this be good for other
>> plants like peppers and cukes?
> Not unless you know what sort of lime it is (the name represents several
> compounds) and what the 'inert' ingredients are and the various
> proportions. At a guess it is mostly gypsum (calcium sulphate) which is
> the core ingredient in most plaster products. This is pH neutral and
> supplies calcium, it is often used as a clay breaker. Other ingredients
> might not be so benign.
It says limestone. The soil pH is 6.2 according to my 7 dollar meter.
Paul
Posted by David E. Ross on June 7, 2010, 11:08 pm
On 6/7/10 6:51 PM, Paul M. Cook wrote:
>> Paul M. Cook wrote:
>>> I have a box of Fix-All wall patching compound. It is gypsum, lime,
>>> starch and some other inert ingredients. What would be a good
>>> formula for tomatoes? My tomatoes are growing very fast and setting
>>> fruit. I know they need calcium. Would this be good for other
>>> plants like peppers and cukes?
>>
>> Not unless you know what sort of lime it is (the name represents several
>> compounds) and what the 'inert' ingredients are and the various
>> proportions. At a guess it is mostly gypsum (calcium sulphate) which is
>> the core ingredient in most plaster products. This is pH neutral and
>> supplies calcium, it is often used as a clay breaker. Other ingredients
>> might not be so benign.
>>
>
> It says limestone. The soil pH is 6.2 according to my 7 dollar meter.
>
> Paul
Your soil is almost neutral, being slightly acidic. I don't know about
tomatoes, but it should be great for roses.
--
David E. Ross
Climate: California Mediterranean
Sunset Zone: 21 -- interior Santa Monica Mountains with some ocean
influence (USDA 10a, very close to Sunset Zone 19)
Gardening diary at <http://www.rossde.com/garden/diary>
Posted by Paul M. Cook on June 7, 2010, 11:28 pm
> On 6/7/10 6:51 PM, Paul M. Cook wrote:
>>> Paul M. Cook wrote:
>>>> I have a box of Fix-All wall patching compound. It is gypsum, lime,
>>>> starch and some other inert ingredients. What would be a good
>>>> formula for tomatoes? My tomatoes are growing very fast and setting
>>>> fruit. I know they need calcium. Would this be good for other
>>>> plants like peppers and cukes?
>>>
>>> Not unless you know what sort of lime it is (the name represents several
>>> compounds) and what the 'inert' ingredients are and the various
>>> proportions. At a guess it is mostly gypsum (calcium sulphate) which is
>>> the core ingredient in most plaster products. This is pH neutral and
>>> supplies calcium, it is often used as a clay breaker. Other ingredients
>>> might not be so benign.
>>>
>>
>> It says limestone. The soil pH is 6.2 according to my 7 dollar meter.
>>
>> Paul
> Your soil is almost neutral, being slightly acidic. I don't know about
> tomatoes, but it should be great for roses.
Isn't 7.0 neutral? What's a good source of gypsum? The small garden center
I assume? I'm not trying to be flip but I can't even find bone meal at my
local Lowes.
Paul
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> starch and some other inert ingredients. What would be a good
> formula for tomatoes? My tomatoes are growing very fast and setting
> fruit. I know they need calcium. Would this be good for other
> plants like peppers and cukes?