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Jun 8, 2020 2:39 PM CST

Do you you guys use fine sand as soil Improved?
I have read somewhere else that sand increases fertility but how much sand is enough?

I bought fine sand (diameter between 01mm to 2mm), I tried to see if 50% fine sand and 50% peat moss thinking to obtain a good drainage but then I got the same result of fine sand and clay soil mixed together when the soil dried out and the water barely penetrate it.

So, what diameter must be use? 1mm to 8mm?
can I still use fine sand? Like 1:80 ratio?
Last edited by kinghernandez Jun 8, 2020 2:43 PM Icon for preview
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Jun 9, 2020 6:42 AM CST
Name: Gina
Florida (Zone 9a)
Tropical plant collector 38 years
Aroids Region: Florida Tropicals
My natural soil here is Florida is nothing but sand. Technically it is called Myakka Fine Sand. It is what exists in the environment we live in, which is the hardwood hammock. It does get heavily amended by leaf debris from all the deciduous trees, etc.

Sand is usually not used to enrich growing substrate because it causes the soil to compact. This seems contrary to what you would think, but it doesn;t increase drainage when added to things like peat and clay, it makes them compact more.

Things that will enrich and lighten your soil are things like perlite, fir bark, horticultural charcoal, etc. Not sand
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Jun 9, 2020 8:32 AM CST
Name: Alice
St. Johns, FL (Zone 9a)
Birds Enjoys or suffers hot summers Ponds Organic Gardener Orchids Master Gardener: Florida
Hummingbirder Hibiscus Fruit Growers Region: Florida Dog Lover Container Gardener
I agree most sand is nutrient poor. It is clay that has trace elements and minerals that provide nutrients. Most good loamy soil has a good mix of clay and sand with humus. For containers you would amend with what Gina mentioned. It is easiest to just buy a good quality commercial potting mix. I would recommend something like ProMix or Happy Frog. Recently I bought an organic mix by MiracleGro and I find it compacts too much, growth has been very poor.
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Jun 9, 2020 9:34 AM CST
Name: Gina
Florida (Zone 9a)
Tropical plant collector 38 years
Aroids Region: Florida Tropicals
That Miracle Gro stuff sucks to put it mildly.
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Jun 9, 2020 9:41 AM CST
Name: Alice
St. Johns, FL (Zone 9a)
Birds Enjoys or suffers hot summers Ponds Organic Gardener Orchids Master Gardener: Florida
Hummingbirder Hibiscus Fruit Growers Region: Florida Dog Lover Container Gardener
I did not realize it was MG when I bought it, I was in a hurry tyring to maintain social distancing and it said organic. Yuck, big mistake, it was the worst. I dumped what was left in the garden, it won't hurt anything it is just not good for containers. I make a point not to use any MG products, I just messed up this time.
Minds are like parachutes; they work better when they are open.
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Jun 9, 2020 9:43 AM CST
Name: Gina
Florida (Zone 9a)
Tropical plant collector 38 years
Aroids Region: Florida Tropicals
I don;t like that so many companies are adding fertilizer to stuff now. It irks me
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Jun 9, 2020 10:55 AM CST
Name: Alice
St. Johns, FL (Zone 9a)
Birds Enjoys or suffers hot summers Ponds Organic Gardener Orchids Master Gardener: Florida
Hummingbirder Hibiscus Fruit Growers Region: Florida Dog Lover Container Gardener
It also gives one a false sense of confidence. You have no idea how long that bag has been sitting in a warehouse or under what conditons before it gets to your store. Fertilizers can deteriorate over time.
Minds are like parachutes; they work better when they are open.
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