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Old July 11, 2018   #46
IronPete
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Ginger I have a question (or 11) about your post on 1 teaspoon calcium nitrate and 1/3 teaspoon epsom salts weekly... is that per plant? Mixed with how much water? What are the epsom salts for?

I have been learning more about fertilizers in my containers but still have problems understanding it all. One year I used 20-20-20 blue stuff. My plants were 15' tall but never flowered. Now I start with 10-15-10 but have moved to15-15-30. But what is the difference between that and say 18-18-21 (I have a Miracle Grow with that mix) or say my Shultz 4-5-8???

I am still confused but the plants look great. We have a short season so not much room for error. Our last frost this year was June 15th...

Any help is appreciated. Most of my toms are in 5 gallon pails (19 litres here... metric always sound so much bigger, lol!). My peppers are in 9" pots.

Thanks, Pete in PEI Canada ��
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Old July 11, 2018   #47
ginger2778
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Originally Posted by IronPete View Post
Ginger I have a question (or 11) about your post on 1 teaspoon calcium nitrate and 1/3 teaspoon epsom salts weekly... is that per plant? Mixed with how much water? What are the epsom salts for?

I have been learning more about fertilizers in my containers but still have problems understanding it all. One year I used 20-20-20 blue stuff. My plants were 15' tall but never flowered. Now I start with 10-15-10 but have moved to15-15-30. But what is the difference between that and say 18-18-21 (I have a Miracle Grow with that mix) or say my Shultz 4-5-8???

I am still confused but the plants look great. We have a short season so not much room for error. Our last frost this year was June 15th...

Any help is appreciated. Most of my toms are in 5 gallon pails (19 litres here... metric always sound so much bigger, lol!). My peppers are in 9" pots.

Thanks, Pete in PEI Canada ��
That is per earthbox, with 2 plants snd a 3 gallon reservoir.
I think you need to learn about what role N, what role P, and what role K play in a plant's development, flowering, and root formation. You want a low nitrogen once it starts flowering, a slightly higher phosphorus, and about twice as high Potassium as Nitrogen. 4-6-8 for example.
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Old July 12, 2018   #48
zipcode
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Now I start with 10-15-10 but have moved to15-15-30. But what is the difference between that and say 18-18-21 (I have a Miracle Grow with that mix) or say my Shultz 4-5-8???
The 15-15-30 sounds pretty good once the fruit have formed. Differences are concentration, obviously, and ratios, but also what microelements and how much and in what form (crucial in no-soil), the type of nitrogen and ratio (NO3-NH4), and other elements that are not mentioned (like how much is in sulfate form?, sulfur is never mentioned even though it is there for sure).
Organics have all sorts of microelements and also a good amount of calcium (especially chicken), but it's never mentioned how much.
Calcium is important depending on your watering water and if you don't add it it will be problematic for taste first.
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Old July 18, 2018   #49
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I have been using some processed chicken poop, earthworm castings and Neptune Fish and Seaweed liquid fertilizer on my tomato plants at a rented plot in a Chicago suberb. I have some tomatoes and flowers at the top of the plants. I have been fertilizing every two weeks or so up to this point, switching products. Somebody said I need to lighten up on the nitrogen at this point. Should I switch to a product like Tomato Tone, and, if so, how often should I fertilize? Signed, Baffled and Very Humbly Yours.
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