[Soilsniffer]

Results so far:

Cherry belle radish in soil -- great germination, dense carpet, good flavor, will do again.
Broccoli raab on coir -- ok germination, grew an inch and started dying. Maybe not enough water.
Twelve year old fenugreek in soil -- 12-hour soak, great germination, quick dense growth. So-so flavor (a little bitter), may not continue.
Twelve year old Austrian field peas in soil -- 12-hour soak, great germination, quick dense growth. Ok flavor, will probably do again, depends on how the just-planted dwarf sugar peas taste.
Chia, in coir -- dense but slow growth. It's been two weeks now and they're only about 1 1/2 inches tall. Little texture, bitter flavor. No more.
Chick peas, in soil -- Soaked, quick dense germination and quick growth. Meh flavor. Probation status for future growings.
Tendergreen mustard, in coir -- ok sprouting, died. Like the broccoli, maybe I didn't water it correctly.

Observations so far: Soil > coir. 12-year old seeds showed no signs of old age.

Just planted dwarf sugar peas, and buckwheat. Next up: radishes, alfalfa, kohlrabi.