Malabar spinach, and Desert zone 10a adapted seeds.

Looking for Desert adapted Malabar spinach seed. O.K. to be  honest I'm looking for seeds mostly food and pollinators adapted to zone 10a. A lot of what I plant does not come up.  I plant wait 4 weeks if it dies or doesn't show up.. I plant something else.  I might have an unmanageable mess if all I have planted decides to bless me with its presence.  My tree collards  and Egyptian spinach have already died. ( Hubby was put in charge  for a week while I went to finish mom"s estate. He did try.. but after a 14 hour day I would not want to be out playing in the bleedin' yard either. Basically desert food.. the fewer spikes and spines the better.

I would suggest trying JL Hudson since they are in California:

http://www.jlhudsonseeds.net/

https://permies.com/wiki/76424/Hudson-Seedsman-California-USA

Hudson identifies itself as a "public access seed bank...established in 1911..."  Their catalog, which includes all kinds of seeds (not just vegetables) is about 85 pages of seeds (15 pages of veggie seeds) with (roughly) an average of 20 varieties per page - 26 varieties of tomato, 32 varieties of pepper, 24 varieties of squash, and many others - all "open pollinated, non F-1 hybrid, non-patented" vegetable seeds, "...many of which have been continuously grown for a century or more..."

Sounds like you need to put up some shade cloth or something to cool down the soil until some plants can make their own shade.  

I bought some cheap umbrellas to shade some big planter pots until they got established.

thanks.. I'll look for them.