Author Topic: Fertilizing blueberries  (Read 571 times)

Plantinyum

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Fertilizing blueberries
« on: February 23, 2021, 01:10:36 AM »
Hi all, when do you start fertilizing your blueberry plants ?? Mine have started to slew buds and I was wondering when should I start fertilizing them ....I generally use blueberry special fertilizer , what fert are u all using??

Daintree

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Re: Fertilizing blueberries
« Reply #1 on: February 25, 2021, 06:14:15 PM »
I start to feed mine as soon as they start to show growth in the spring AND I know it won't freeze any more.  I don't mind a bit of frost after I have encouraged them to grow, but I want to avoid a hard freeze.  For us, that is usually March.
I give them Osmocote Plus and Espoma soil acidifier.
Don't know what the equivalent would be in your area. 

Cheers,
Carolyn

Plantinyum

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Re: Fertilizing blueberries
« Reply #2 on: February 26, 2021, 05:36:51 AM »
I start to feed mine as soon as they start to show growth in the spring AND I know it won't freeze any more.  I don't mind a bit of frost after I have encouraged them to grow, but I want to avoid a hard freeze.  For us, that is usually March.
I give them Osmocote Plus and Espoma soil acidifier.
Don't know what the equivalent would be in your area. 

Cheers,
Carolyn
thanks Carolyn !! March is our spring month  where the weather starts turning and we generally dont have very hard and persistent freezes , thought nights will be frosty almost for the whole month so I think I will wait on them a little more , they will either way start growing and will experience subzero temps since thats what happened past spring......they seem the very first plant in my yard,  along with gooseberries that that starts growing so early .....

brian

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Re: Fertilizing blueberries
« Reply #3 on: March 04, 2021, 09:28:44 PM »
I also use oscmocote plus and soil acidifier.   "whenever I get around to it"

Plantinyum

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Re: Fertilizing blueberries
« Reply #4 on: March 04, 2021, 11:17:03 PM »
I also use oscmocote plus and soil acidifier.   "whenever I get around to it"
I really need to find soil acidifier , wherever I do ask about garden sulfur ,people seem to either do not know what it is, or do not have it....

Seanny

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Re: Fertilizing blueberries
« Reply #5 on: March 08, 2021, 12:10:47 AM »
Blueberry doesn’t like nitrate.
Osmocote Plus has high nitrate.
Use something else.

Plantinyum

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Re: Fertilizing blueberries
« Reply #6 on: March 10, 2021, 01:52:00 PM »
I bought granulated sulfur, how do I proceed to use it on blueberries ? I read people sprinkle it on the soil surface and water it in. Do I need to till it into the soil surface ?? 

deac777

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Re: Fertilizing blueberries
« Reply #7 on: March 18, 2021, 11:03:28 PM »
I  use Espoma soil acidfier and a water soluble  fertilizer called Miracid. You can also use a fertilizer with a high percentage of urea. You want your soil pH to be between 4 -5
« Last Edit: March 18, 2021, 11:14:07 PM by deac777 »

Plantinyum

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Re: Fertilizing blueberries
« Reply #8 on: March 19, 2021, 02:35:12 AM »
I  use Espoma soil acidfier and a water soluble  fertilizer called Miracid. You can also use a fertilizer with a high percentage of urea. You want your soil pH to be between 4 -5

I dont think I can find the epsoma acidifier in my country, did a quick search and nothing....I can find other brands of soil acidifier and fertilizer in one , I will try them also...
Deac777 do u have any tips for using the sulfur I allready have ??

brian

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Re: Fertilizing blueberries
« Reply #9 on: March 19, 2021, 10:34:24 AM »
Plantinyum - I believe epsoma is just plain elemental sulphur, so if you already have that or can find it locally it is probably fine as long as it has no harmful contaminants.

here's the label for epsoma acidifier:

Plantinyum

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Re: Fertilizing blueberries
« Reply #10 on: March 19, 2021, 01:44:49 PM »
Plantinyum - I believe epsoma is just plain elemental sulphur, so if you already have that or can find it locally it is probably fine as long as it has no harmful contaminants.

here's the label for epsoma acidifier:

yeah I have bought pure granulated sulfur with the label saying it containing pure substance around 99.9% . 
Heres a pic of the thing, it is alot yellower in person, then compared to the shitty pic my smartphone makes.

« Last Edit: March 19, 2021, 01:49:31 PM by Plantinyum »

brian

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Re: Fertilizing blueberries
« Reply #11 on: March 19, 2021, 03:06:31 PM »
It'll probably work... just use 1/3 the amount. 

deac777

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Re: Fertilizing blueberries
« Reply #12 on: March 20, 2021, 12:23:28 AM »
Pure sulfur will work. As Brian said, use 1/3 of the amount.  Don't expect the pH to drop immediately. I also try to use rainwater to water my plants. The water that comes from the water utility is alkaline.




Plantinyum

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Re: Fertilizing blueberries
« Reply #13 on: March 20, 2021, 03:14:41 AM »
Yes I watered my blueberries last summer only with collected rain water, I also used it exclusively for my potted tropicals also. Planning on collecting twice the amount of rain water this summer since my collection has doubled over winter ....

1-3 of the whole amount?? What quantity should I use per plant ? Maybe the amount of a cup of water, or a handful ??
I know it will be a long process till the sulfur is degraded and lowers the ph , they give it a full year time till the last particles are dissolved ..I should have added it in the fall so I could have harvested its effects on the plants this spring, but from now on I will be adding a small amount the plants every fall.

brian

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Re: Fertilizing blueberries
« Reply #14 on: March 20, 2021, 01:53:13 PM »
I'm sure there is a more precise way, but I was using  "two big handfuls" of espoma in each blueberry pot ("half barrel" planter).  So maybe a handful of pure sulphur evenly spread across the top for a similarly sized container?

I use pool test strips for reading ph.  You can just check every year and add more sulphur if needed. 

Plantinyum

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Re: Fertilizing blueberries
« Reply #15 on: March 21, 2021, 01:21:38 AM »
I'm sure there is a more precise way, but I was using  "two big handfuls" of espoma in each blueberry pot ("half barrel" planter).  So maybe a handful of pure sulphur evenly spread across the top for a similarly sized container?

I use pool test strips for reading ph.  You can just check every year and add more sulphur if needed.

Thanks ! I have a ph meter which when I did the tests with lemons, and other substances with generally fixed ph, it read accurate. I will test the soil and work from there, my blueberries did not had any problems whatsoever indicating a high ph , so I may need very little ...

lebmung

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Re: Fertilizing blueberries
« Reply #16 on: March 27, 2021, 06:49:36 PM »
For fast results use phosphoric acid, you don't need much, just dilute until water has a 5 pH.