Cullen corylifolium is an annual herb in the Fabaceae family with hard seedcoat requiring scarification to achieve high germination rates. Natural germination is low (2-11%) without treatment.
Before sowing
Scarification
quimica Concentrated sulphuric acid 5 min, water soak 4 hrs, sulphuric acid 20 min increases germination to 94%. Mechanical scarification (sandpaper 10 min) increases germination to 79%
Soak
24 h Pre-soak seed 12-24 hours in warm water
Hot water treatment may be used; if seeds do not swell after soaking, make careful nick in seedcoat
Sowing
Substrate
well-draining seed raising mix, sandy or loamy soil
Depth
levemente_coberta
Temperature
25°C
Moisture
media
Container
individual pots
What to expect
Step 1
Pre-treat the seed
Step 2
Sow at levemente_coberta · 25°C
Day 14–60
Seedlings emerge (~90%)
Tips
Sow in individual pots as soon as possible after germination to minimize root disturbance, as this species is intolerant of transplanting. Sow in spring after last frost. Requires full sun to partial shade and well-drained soil.
Sources: tropical.theferns.info, plantuse.plantnet.org (PROSEA), pfaf.org, grokipedia.com
