The arrival of summer is marked by the vibrant magenta flowers of the poppy mallow, also known as winecups. This native perennial creates a beautiful display of blossoms and foliage with its sprawling branches. It is often found in wildflower mixes and dry prairie plantings, but is now gaining popularity in perennial garden beds due to its low-maintenance nature and ability to attract bees and butterfly caterpillars. Poppy mallow requires full sun and well-draining soil, making it an excellent choice for meadows, rock gardens, slopes, and retaining walls. When planting poppy mallow, it’s best to start from seed and space the plants 18 to 24 inches apart, as established plants can be difficult to transplant due to their long taproots. To care for this plant, ensure it receives full sun and avoid planting it in areas with tree cover, as it thrives in open environments like the midwestern prairies where it originates.
The Poppy mallow plant thrives in dry and rocky soil that is not too deep, and has a slight acidic pH ranging from 6.0 to 6.5. This unique plant’s drought-resistant feature can be attributed to its long tap root that searches for water at great depths. It’s important to note that well-drained soil is crucial, even during the winter season.
In the initial stage of growth, it’s important to water the young plant consistently but not excessively as this will help the roots develop strongly. Once the plant has taken root, it typically does not require frequent watering except in cases of prolonged dry spells or intense heat. When you do need to water poppy mallow, make sure to do it deeply but not too often.
Poppy mallow is a resilient plant that can endure hot summers and cold winters, but it struggles in high humidity, which can cause fungal diseases. It doesn’t require fertilizer – in fact, over-fertilizing can result in poor blooming. Adding compost to the soil before planting and applying a thin layer of compost each spring can benefit poppy mallow in nutrient-poor soil. While pruning isn’t necessary, trimming back the plants to ground level before growth begins in the spring can help. Poppy mallow can be grown in pots, but it requires more frequent watering than plants in the ground and should be insulated during the winter months. The plant is relatively pest-free, but crown rot or root rot can develop if the soil is poorly drained or overwatered. Propagation by seed can be difficult due to the tough seed coat, but poppy mallow tends to self-seed. Companion plants that pair well with poppy mallow include blanket flower, agastache, and penstemon.