Rivea Corymbosa seeds have a thick coat. Therefore, scarification is recommended to speed up and increase germination. Nick or file the seed coat away from the germ eye. (The germ eye is the little circular dent at the top of the seed.) Then soak the seeds until they swell up. This typically happens in 12-24 hours. The seeds should then be sown at a depth of 1/4′ inch in a rich, well-draining soil mixture. The seedlings will prefer less light at first but will eventually come to prefer full sun with maturity. This is probably because they naturally start their growth in the shade of other plants before rising into the warm tropical sun. Sprouting seeds and young seedlings are prone to rot. Therefore, a variation on the germination method is to soak the seeds for less time and then germinate them in a very lightly moist paper towel in a zipper baggie. This avoids the retention of too much water in the initial stage that could lead to rot. After the seeds have germinated, transplant them into soil. Keep plants constantly watered and provide plenty of drainage and root space. Give them something to climb once they reach about ten inches. Large plants should be trimmed back if space is an issue.