Volcanic soil does not drain

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Cptn Feathersword

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Hey guys, noob here who has the good fortune to live in a very fertile area. The soil is volcanic, so black and lush you could almost eat it for dinner lol. Under that is clay but there is a good 50cm+ (1.5 feet) of black gold on top.
However, this black soil does not drain, Im talking 100% water retention here. Aggriculture is the main industry here and the region is famous for its high quality produce but nothing gets watered, ever.
If I water the soil it only penetrates 50mm (2") down and forms a nasty slurry, rain however does not cause the same problem.
We have a rainy season in summer that lasts 6 weeks and a 2m (6 feet+) snowpack in winter that lasts from december to early april so I guess there is enough moisture in the soil from that to last the entire summer.
If I put a shovel in the ground it is always moist from about 5cm (2") down.
I have a pic of the soil but not sure how to upload it, I will try.

So this awesome but non draining soil poses a bit of a problem when it comes to a grow. I have some bag seed plants atm that were started in this soil (in starter pots) but were stunted badly when it turned into concrete from my attempts at watering so I transplanted them to a 75% perlite/ 25% vermiculite mix and about half of them have recovered.
This is not how I want to grow long term though and I think that if I did dig pits and put the perlite/vermiculite mix in they would just end up cocooned in a slurry of dirt and end up mini wells. Theres just nowhere for the water to go.

So my plan atm is this, please critique any way you see fit.
*Grow autos due to the smaller root system, they shouldnt hit the clay like a photo plant would.
*Germinate in jiffy cubes making sure to put them in the ground before the tap root hits the bottom.
*Take them to my location where I will have tilled plots of 100% local soil.
Water them in gently but not enough to create a slurry in the surrounding soil.
*Let them grow 100% natural just like all the fruit and veg does around here.

What do you guys think?
 

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I think if I had that kind of soil I would mix in some well composted Cow or horse manure and the perlite, that should help some with the drainage, and adding more compost year after year it will just keep getting better.
 
Thanks for the reply 007.
I actually mixed a pot of 50/50 soil and perlite to check how it would drain but still had the same problem with lack of penetration and forming a slurry on the top.
I understand this goes completely against common practice but this soil is telling me not to water it, and Im watching all the vegetables grow like crazy without being watered so why wouldn't the weed?
 
I'm all for not watering that is why I grow some of my photos in swamps. give it a shot you will never know if the don't try.
 
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