Wood ash

[Greenfingers420UK]

Good day all, Do any of you add any wood ash to your soil mix? I understand we need to use it sparingly, so how much?
The ash to be used is just ash from a mix of woods.

 

[StickyBandit]

Funny you should ask. I was just sitting here wondering the exact same thing
I would also like to know about top fertilizing and watering it in
I have half a bucket of manuka and kanuka ash

 

[chilliwilli]

I have tried the palm tree ash sofar with one heaping teaspoon per 7l soil. Can't say much if it made a difference, i used the canna bio ferts like ever with no differenc for the harvest.

But u have to be carefull when using. I used it as a topdress after watering. This way it is less caustic because the oxides in the ash will get turned into hydroxydes when moist and the hydroxydes will react with the co2 and form carbonates. You could mix the ash separate with water and then dry and add this or when u mix your soil with ash and let it cook for some time it should be less problematic but imo could harm the microbiotic life in the soil.

 

[troutman]

It can be used to give your plants extra trace elements.
The biggest issue is pH. So use a little and test before
using.

 

[St. Phatty]

Do many growers know that Wood Ash contains Potassium ?

I see people buying the Langbeinite 0-0-22 at the garden supply store.

Was talking to a non-Cannabis gardener. They were surprised to hear that Wood Ash has Potassium.

I suspect that some people "think it's better" because it comes in a box.

 

[Three Berries]

Wood ash is mostly calcium. Ummm that white ash.....

I burn a lot of tree debris. It's amazing the volume of a tree can be reduced to just the mineral elements that it took up from the soil. Or even more amazing to see the volume that is tuned into CO2 and water.

 

[[Maschinenhaus]]

I have tried the palm tree ash sofar with one heaping teaspoon per 7l soil. Can't say much if it made a difference, i used the canna bio ferts like ever with no differenc for the harvest.

Do you know it? Contains vegetable carbon and enough potash, it improves the structure.

500 g /100 l of soil can be prepared according to the manufacturer. And if you recycle your soil, you won't have to worry about it for the next few years.

I water with pure reverse osmosis and have no problems, there also works with LED without problems if you pay attention to the temperature in the pot and the ambient temperature!

Have you read in the Compendium 1.0 what I wrote about the temperature under LED?

Urgesteinsmehl

Bentonit

​

 

[chilliwilli]

Have you read in the Compendium 1.0 what I wrote about the temperature under LED

You mean this: Kompendium: Erde, Wasser, Licht, Mikroorganismen, Ionenaustausch, Nährstoffe?
Nice read thx, i think i stumbled upon this but did not read much of it.

The terra preta mix looks good but i like to use the sonnenerde schwarzerde and bodenaktivator for my mix.
In my first mix i also used zeobas from multikraft and i liked it very much. Second mix was without this and didn't last as long as the first. For my next i will try the ultrafine grinded zeobas.

 

[[Maschinenhaus]]

I also have something similar in composition to ZEOBAS. The compendium hasn't been maintained for years, and I didn't feel like being active there anymore. I'll post parts of the new version here bit by bit.

Volcanic Rock

VulkaTec (mineral substrates)

 

[Old Piney]

I use it all the time outside in the garden, but I would make a suggestion for indoor container use. Leach it out good first to get the lye out it's extremely alkaline and will burn. The old timers made their lye for soap with wood ashes

 

[[Maschinenhaus]]

I use it all the time outside in the garden, but I would make a suggestion for indoor container use. Leach it out good first to get the lye out it's extremely alkaline and will burn. The old timers made their lye for soap with wood ashes

This is not necessary for products for the garden or indoors. You can use these immediately. With the lava granulate and pumice that I buy in bags, it can also go straight into the pot or garden.

Did you mean the ZEOBAS product?

 

[St. Phatty]

Wood ash is mostly calcium. Ummm that white ash.....

I burn a lot of tree debris. It's amazing the volume of a tree can be reduced to just the mineral elements that it took up from the soil. Or even more amazing to see the volume that is tuned into CO2 and water.

I was thinking about getting mine tested by a soil chemistry service.

I thought it was close to Potassium Carbonate, but that seems too restricted, like there might be other chemical elements in it.

It would be great if there was some Magnesium in Wood Ash. That's the one element that is often left out, people give their plants NPK, Ca S, and Mg only comes with the Lime or the Epsom salts if they are used.

 

[Three Berries]

I was thinking about getting mine tested by a soil chemistry service.

I thought it was close to Potassium Carbonate, but that seems too restricted, like there might be other chemical elements in it.

It would be great if there was some Magnesium in Wood Ash. That's the one element that is often left out, people give their plants NPK, Ca S, and Mg only comes with the Lime or the Epsom salts if they are used.

All the minerals are in the wood ash. The complete plant minus the CO2 and water. So all the minerals the plant uses are there, the basic mineral won't be destroyed.

That being said trees accumulate some hazardous minerals. Lead being the main one. So try and get wood ash from a plant less than 20 years old.

 

[[Maschinenhaus]]

It would be great if there was some Magnesium in Wood Ash. That's the one element that is often left out, people give their plants NPK, Ca S, and Mg only comes with the Lime or the Epsom salts if they are used.

There are different stone powders for different soil conditions. Neutral to acidic flour is more suitable for strongly alkaline soils, alkaline for acidic soils. It also depends on the existing mineralization of the soil: For example, there are zinc-poor and zinc-rich soils - as well as corresponding stone powder.

5% magnesium and in the mixture of primary rock powder it is also 5% with this manufacturer.

Diabase is another example of a mixture of bedrock dust.

CaO 13,9 % & MgO 4,7 %

This is a very good mix and contains a lot more, I've been buying it for years for my mother's farming and cannabis crops.

 

[iStruggle]

Do many growers know that Wood Ash contains Potassium ?

I see people buying the Langbeinite 0-0-22 at the garden supply store.

Was talking to a non-Cannabis gardener. They were surprised to hear that Wood Ash has Potassium.

I suspect that some people "think it's better" because it comes in a box.

Langbeinite contains other nutrients like magnesium and sulfur

 

[Cvh]

Wood Ash in the Garden - Indiana Yard and Garden - Purdue Consumer Horticulture

Wood stoves and fireplaces are great for warming gardeners’ chilly hands and feet, but what are we to do with the resulting ashes? Many gardening books advise throwing these ashes in the garden. Wood ash does have fertilizer value, the amount varying somewhat with the species of wood being used...

www.purdue.edu

Generally, wood ash contains less than 10 percent potash, 1 percent phosphate and trace amounts of micro-nutrients such as iron, manganese, boron, copper and zinc. Trace amounts of heavy metals such as lead, cadmium, nickel and chromium also may be present. Wood ash does not contain nitrogen.

The largest component of wood ash (about 25 percent) is calcium carbonate, a common liming material that increases soil alkalinity. Wood ash has a very fine particle size, so it reacts rapidly and completely in the soil. Although small amounts of nutrients are applied with wood ash, the main effect is that of a liming agent.

 

[Three Berries]

Langbeinite contains other nutrients like magnesium and sulfur

I use it. Both as a additive to new soil and as a liquid for top dress or foliar spray.

0-0-22 K2SO4, 2MgSO4

 

[Tynehead Tom]

I add wood ash to my outdoor mix every spring. It's a combination of aspen, balsam, spruce and pine. I have a firepit out back and nothing gets burned in it but clean wood, no garbage or other debris. The ash is generally a fine white powder with the odd bit of charcoal. I spread it with a shovel anywhere on my yard that has patchy grass and I would say I add 2 or 3 garden shovels of ash to a 220 liter mix of soil. Seems to work well for my greenhouse plants.

 

[Three Berries]

I was looking at pine shavings for a outdoor mulch. Most livestock stores sell it by the bale pretty cheap. Currently outside for mulch on trees and bushes I use the shredded wood from the power company tree trimmings. It takes about 3 years to completely disappear but makes a great root zone.

 

[Greenfingers420UK]

So basically were saying use very sparingly in pots.
this is a great forum, Thanks