Decalepis hamiltonii, also known as swallow root, has hard seeds that need specific conditions for germination. Here are five short tips:
 
Scarification – Gently rub the seed coat with sandpaper or nick it slightly to enhance water absorption.
 
Soaking – Soak the seeds in warm water (around 30°C / 86°F) for 24–48 hours to improve germination rates.
 
Well-Draining Medium – Use a light mix of cocopeat, sand, and compost to maintain moisture without waterlogging.
 
Warm & Humid Conditions – Keep temperatures around 25–30°C (77–86°F) with moderate humidity for best results.
 
Patience & Consistency – Germination may take 2–4 weeks or longer, so maintain a moist but not soggy environment.