I planted bitter melon and ridge gourd seeds a couple weeks ago, and am the proud observer of happy healthy seedlings braving it every day outside on my deck in full sun.
I had to place the seeds on top of my router in a sealed ziplock baggie so they would reach ~80F needed for their germination.
Rapid growth in the one week between these two sets of pictures.
Both are vining plants and I need to set up a trellis for them to grow on. They should be ready for planting in the ground in a couple weeks here.