YELLOW ROCKET RAGWORT Ligularia stenocephala
In our opinion, Ligularia are one of the most valuable perennials because it has all-season appeal! In summer masses of yellow flowers appear on spikes, and last for many weeks! An added bonus, the large leaves are a focal point in the garden all season long. Ligularia can be grown in regular garden soil, and can also tolerate boggy wet soils. Rare and very limited supply!
Height: 30" tall leaves, 5' tall flowers
Location: Part or in regular soil, or if soil is moist this plant can be grown in a sunny location.
Hardiness zones: 4-9
Germination: As with many perennial seeds, these seeds can benefit from a period of moist cold to help them break dormancy. This is done by giving them a cold 'winter' period (artificial or natural), and then a warming to simulate 'spring', and time to grow! Here's how this can be done:
Obtain a planting container that has holes in the bottom for excess water to drain. Place the seeds just under the surface of your growing medium, and water. Place your container in a cold area (but not freezing, perhaps a refrigerator) for 4-6 weeks. Once the cold period is completed, place the container at room temperature for them to germinate. Be sure to keep the soil moist during this entire germination period. Seedlings will sprout a few weeks, or occasionally several months, after the warming period.
Ligularia seeds also do very well being planted directly outdoors in the fall, where they will naturally germinate in the spring. Be sure to mark where they are planted.