I gotta find this Greenmart place. I am isolated on the surface of the sun aka the Coachella Valley. It sucks because they never have anything even remotely interesting here at the local nurseries. I have committed much time, and gas to traveling all over southern California in search of what is classed as exotics here. I have accrued a nice collection this past year. Traveled around, and had some shipped in with painful shipping charges. I am classed here as a 9b, but it seems exceedingly rare for my area to drop below 30. That said I am out in no man's land with some of the trees I am trying to grow. nobody around me has any experience with these plants. Odd man out for sure.
Hi Hana,
Got to tip my hat for your determination in growing fruit trees in such an arid condition like Coachela Valley. But, please don't be despair, there's "Mangofang", one of our Hero member who also live in your valley (Palm Springs) that seems to have success in growing mangos and many other tropicals.
And also, you and many others can find encouragements by watching this man's video in Youtube: "VeganAthete", who has successfully growing edible gardens and fruit trees in his desert home in Phoenix, Arizona...! Here's one of his many postings:
https://www.youtube.com/watch?v=5bcRUESwD08Ok, back to the topic: Soursop.
The reason I worry about growing it, is that I had one, about 6 ft tall that died 2 Winters ago. And as I recalled, that year's Winter was very "mild"...so I decided not to give it any protection. I guess I was wrong!
But I am willing to try it again, this time I'll try to be more careful...