Work out seed count and grams needed for a planting area.
The grid of possible plant positions is multiplied by seeds per hole plus a ten percent buffer for misses. Knowing the seed count keeps you from buying far more seed than the bed can actually hold.
Seed Quantity
Plants = floor(bed length/spacing) x floor(width/spacing); seed weight = seeds / ~300 per gram
Plants = floor(bed length/spacing) x floor(width/spacing); seed weight = seeds / ~300 per gram The grid of possible plant positions is multiplied by seeds per hole plus a ten percent buffer for misses.
Knowing the seed count keeps you from buying far more seed than the bed can actually hold.
This calculator takes 4 inputs: Bed length, Bed width, Spacing, Seeds per hole. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.