Growing Wisconsin Fast Plant (Brassica rapa) outside

West Babylon, NY(Zone 7a)

I posted this here because this plant is related to the Turnip.

I ordered Wisconsin Fast Plant seeds as a fun plant to grow they mature really fast! The instructions only say how to grow them inside, but I want to grow mine outside in a pot. I know they suggest temps no lower than 68 F so late April early May I will plant the seeds, plus this plants wild cousin grows here naturally so I know they are tough plants. Do they prefer moist or dry soil, and do they prefer shady or sunny spots?

Everett, WA(Zone 8a)

What I find online sugegsted they were closest to wild mustard, so they should not be fussy!

>> they suggest temps no lower than 68 F

Most Brassicas like cool weather, and mustards are hardy MUCH colder than that, so maybe "68 F" is just the temperature at which they grow fastest.

Most Brassicas like moist soil, but mustards (a.k.a. "weeds") are supposed to tolerate almost anything.

I found this:

"based on a variant of wild mustard (Brassica rapa) that was selectively bred to complete its seed to seed life cycle in just five weeks"
"germination to flowering within two weeks."

They sound like fruit flies or mayflies!

>> The plant is self-incompatible and is, thus, easily out-crossed.

I believe that means that you can't produce another generation from the "Wisconsin fast Plants TM" seeds you bought. (You can ONLY cross them with other Brassica rapa plants, of which there are dozens or hundreds of varieties).

This bothers me, since I don't like the idea of commerical seed "engineered" so that you can't save and re-plant seeds from your own harvest. But I gues this is more of a research tool or classroom demonstrator.

Of course, since they CAN out-cross, they can still mess up a neighbor gardener trying to save his or her Brassica seeds.

West Babylon, NY(Zone 7a)

For seed all you need is 2 plants next to eachother to cross pollinate, do as long as two or more seeds in the pot sprout they should produce seeds.

As for the other information you gave me it is very helpful thank you.

Everett, WA(Zone 8a)

Thanks for explaining that! I thoguht when a variety had SI, it took signifcant manipulation to produce fertile seed: like, SI seeds could only be produced by a cross between two fertile strains.

I probably got this mis-impression by reading things like the follwoing, and interpreting "or another plant with a similar genotype" as any other plant of that variety.

I did more reading, and now I see that any cultivar with SI actuall has dozens or hundreds of versions of its "S" gene, so that any one plant can fertilize or be fertilized by some % of the population: 99.5% if there are 200 versions, or 95% if there are 20 versions.

Tricky things, plants!

>> In plants with SI, when a pollen grain produced in a plant reaches a stigma of the same plant or another plant with a similar genotype, the process of pollen germination, pollen tube growth, ovule fertilization, and embryo development is halted at one of its stages, and consequently no seeds are produced

Liberty Hill, TX(Zone 8a)

What's SI mean sigh...

Everett, WA(Zone 8a)


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