[Tilted Irish Kilt]

greeneyes :" Even if it was safe, I’d still grow heirloom, because I object to a company owning the food supply."

Just remember the rules of horticulture :
(#1)Rotate your crops / keep a garden guide cartoon as reference to where crops were, and next where they should go.
(#2)Be aware of family types in the rotation since repetition breeds disease likelihood or insect pests :
(solanacious plants: includes potatoes, tomatoes, peppers, eggplants,etc.)
(cole crops/Brassicas :Cabbage, kale, broccoli, brussel sprouts, Bok Choy, etc.)
(#3)Healthy soil generally makes for healthy crops, especially in rotation, maximizing fertility usage.
(#4) A good general use (N/P/K) fertilizer is 15-15-15

If you intend to keep seeds, try to keep 200 yard distance between hybrids and heirlooms , so as to NOT CROSS-POLLINATE ;
bees work flowers without benefit of a compass.

[greeneyes]

That’s exactly what I do.

[Wneighbor]

“Healthy soil generally makes for healthy crops”

Can’t be repeated enough! Time enriching the soil is the best investment in the garden. It’s my toughest challenge. No amount of money spent on a nice landscape is worth as much as proper soil building.