How do I germinate Jack-in-the-pulpit seeds?


How do I germinate Jack-in-the-pulpit seeds?


Jack-in-the-pulpit (Arisaema triphyllum) seeds can be sown directly outdoors or started indoors.  Harvest the cluster of berries as soon as they turn red in late summer.  Each berry usually contains 4 to 6 seeds.  Remove the seeds by gently squeezing them from the berries.  Seeds can be planted immediately outdoors.  Plant seeds ½ inch deep in a moist, shaded location. 

Jack-in-the-pulpit seeds can also be started indoors.  Before sowing the seeds indoors, the seeds must be stratified (exposed to cool, moist conditions) for 60 to 75 days.  Jack-in-the-pulpit seeds can be stratified by placing them in moist sphagnum peat moss or sand and then storing them in the refrigerator for 2 to 2½ months.  Suitable storage containers include plastic bags and small food storage containers.  After the seeds have been stratified, remove the seeds from the sphagnum peat moss or sand.  Plant seeds ½ inch deep in a commercial potting mix.  In spring, plant the seedlings outdoors. 

Last updated on
March 2, 2022