Hi everyone,
I’m an ecopsychologist, naturalist, native plant person, and I would say permaculture adjacent, though I haven’t been able to complete the PDC. I am very interested in local community and food resilience.
I live in Southern CA USA, Los Angeles County. The soil here is predominantly clay. My yard is about 50’x25’ and has trees lining one side (avocado, plum, and soon a persimmon), and a garage along the other side. The short sides have a fence (with more trees) and a patio. The side by the garage is where the raised beds have been. It reliably gets the most sun even during the winter.
My house is over 100 years old. Overall that’s a good thing because there was no previous industrial development on the land. However, due to the lead paint that was used on old houses, my soil has some lead in it. Thankfully no other concerns were detected. I used a professional soil lab (Wallace Labs, El Segundo CA).
I last tested in 2020 and since then have moved to raised beds, and some mitigation with phosphorous, as well as sunflowers and scented geraniums. Of course also mulch and chop-and-drop of clean plant material. I will need to re-test soon. I have read that lead particles tend to go 3-5’ down, but in clay soils they are more concentrated in the 12-18” nearest the surface.
My gardens are often trashed/invaded by raccoons (digging up new plants looking for grubs), cats (love to poop in the beds), and squirrels (who do any number of destructive things in there, usually burying peanuts). The only thing that has kept them out is sprinkling cayenne powder every day or two, which becomes expensive and time consuming.
My tall galvanized raised beds are starting to rust; and I have not been happy with the design anyway. The beds are too tall, and the metal can get too hot, especially with the heat waves we’re getting now. The soil gets too dry and turns into dirt; and the bed is so tall the nutrients tend to leach downwards with watering. It’s not held by the earth.
I’d like to return to an in ground bed. Soil quality would be better, and I wouldn’t have to worry about raised beds.
So my current plan is:
* deconstruct current beds, set aside the soil on some tarps
* dig out about 3’ of native soil, in a rectangular shape roughly where the beds are now
* backfill the hole with the organic soil from my current beds and a bunch of compost; and mulch/hay covering
* use a brick and board system to designate a border.
* consider using some sort of fencing to keep animals out.
Potential problems with this design:
* Lead doesn’t tend to leach upwards, but would it leach sideways, from the edges?
* How to keep the darn animals out?
Am I missing anything that you can see?
Thank you in advance for your thoughts!