>>648487>>648499I'm living at 50°N (very little sunlight, 8 hour day right now and solar altitude peaks at 16.6°, plus 90% of the time overcast) and I'm experimentally pre-growing a watermelon on my East-North-East facing window sill (to be replanted into the garden by April), and it's doing slow but fine
But I'll only let the others sprout by around early February, so I can compare how the early one mentioned above (planted November) is doing compared to the others and if it has a significant better head start
