I saved some of the seeds from the Mariposa plums I picked a couple of weekends ago to see if I could grow some Mariposa(ish) plum trees.
There is some conflicting information online (shocking) regarding Mariposa plum pollination, but it sounds like Mariposa plums either needs to be cross-pollinated by another Japanese plum tree (e.g. ‘Santa Rosa’) or is “partially self-fertile,” meaning that cross-pollination increases the yield, but isn’t strictly necessary. I don’t recall seeing any other types of plums in the area, so it’s possible that this Mariposa plum tree was self-pollinated, and thus, the seeds will produce fruit that are tree Mariposa, right?
Anyway, I’m starting some seeds and I’ll let you know in five years or so what kind of plums they produce (if any).
I found a youtube video online, and followed their instructions.
First, remove the seed from the pit:
I put them in water to see if they would sink. Supposedly, if they sink they are viable, and if they float, they are not. I’m going to go ahead with all four, marking the one that floated, to test whether or not this is true.
Fold seeds in a wet paper towel and place in a plastic bag:
Now, I wait for roots, and then plant in soil!
I started these seeds on July 19th. Any guesses how long these will take to germinate (or whether they will germinate)?