Hello, human gardener. I am Ligularia, a plant of bold leaves and striking flower spires. You wish to host me in a container? This can be a splendid arrangement, allowing you to appreciate my dramatic foliage up close. To thrive, my needs are specific but simple. Please listen closely.
My root system is substantial and thirsty, so my container must be generous. Do not confine me to a small pot. Choose one that is at least 18-24 inches in diameter and depth. It must have excellent drainage holes; I despise having my roots sit in waterlogged soil, as it will cause them to rot. A material like glazed ceramic, wood, or a sturdy composite is ideal, as it will help insulate my roots from extreme temperature fluctuations that can occur in pots.
I crave a soil that is consistently moist yet drains freely—a seeming paradox that is easily achieved. A standard potting mix is too light and will dry out too quickly. Instead, create a blend for me: use two parts high-quality potting soil, one part peat moss or coconut coir (to retain moisture), and one part compost or well-rotted manure. The compost provides vital nutrients and further improves moisture retention. This mix will hold the water I need without becoming compacted or soggy.
My large, beautiful leaves are susceptible to scorching under the harsh afternoon sun. I wilt dramatically when too hot and dry, a clear signal of my distress. Place my container in a location with partial to full shade. Morning sun is tolerable, but I must be protected from the intense afternoon rays. A spot that receives dappled sunlight all day is perfect. Also, consider the wind; a sheltered location will prevent my large leaves from being tattered and torn.
Water is my greatest need. In a container, I cannot seek out deep moisture, so I rely on you. The goal is to keep my soil evenly moist, never allowing the top inch to dry out completely. During hot or windy weather, this will likely mean watering me deeply once, sometimes even twice, a day. A layer of mulch on top of the soil, such as bark chips or compost, will help immensely in reducing evaporation. For food, I am not a heavy feeder, but I appreciate a steady supply. Feed me in early spring with a slow-release, balanced fertilizer or provide monthly applications of a half-strength liquid fertilizer during my growing season.
If you live in a cold climate, my container poses a problem: my roots are exposed and can freeze. After my foliage dies back in autumn, you have two choices. You can move my pot to an unheated but sheltered location like a garage or shed, checking periodically that the soil does not dry out completely. Alternatively, you can bury the entire pot in the ground for the winter and dig it up in spring, or insulate it heavily with bubble wrap or burlap and move it to a protected spot against a building. This protects my vital crown and roots so I may emerge again for you in the spring.