It is best to trim the growth back in the fall, resulting in a plant with little visual appeal as a houseplant. Milkweed is not commonly grown as a houseplant. Tropical Milkweed will continue to grow in warm regions, but trimming the growth back is beneficial for Monarch butterfly populations. The container should be moved to a protected place, like a shed, garage, or basement, to protect the roots from the extreme winter chill. Native Milkweed is a herbaceous perennial, and the growth can be trimmed back in the fall. Use a balanced, water-soluble fertilizer once a month during the growing season to encourage new growth and abundant blooms. Milkweed is not a heavy feeder, but plants grown in containers can benefit from applying fertilizer. Milkweed is drought tolerant, but plan to frequently water plants in containers.
It is not necessary to water if it has recently rained, but once the soil dries out, saturate the soil until excess water drains through the container. Asclepias fascicularis (Narrowleaf Milkweed) is a flowering perennial boasting attractive clusters, 4-5 in. Drainage holes are necessary to ensure the plants do not sit in standing water, but this causes the soil to dry out more quickly. Plants grown in containers need water daily or every couple of days. Native and tropical Milkweed are low-maintenance plants, but plants grown in containers need a bit more care when it comes to watering. Potted Milkweed plants can be grown in a large container and used to anchor a patio design or introduce color to a deck. Milkweed is a medium-sized plant that will grow 3 to 4 feet tall and up to 2 feet wide. Repot with rich potting soil yearly or top-dress the soil with organic mulch or compost. Using rich soil will encourage more growth. Since potted plants need to be watered more often, the nutrients will be leached from the soil. Soil with high organic content supports sustained growth. Milkweed plants can handle low-quality soil, but plants grown in containers need rich, fertile soil. Milkweed plants do not like to be soggy, so the pot must have drainage. One plant can live in a 14- to 16-inch container.
#Narrow leaf milkweed seedling full#
Place the pot in a sunny spot that receives full sunlight. New growth emerges when the weather turns warm, making spring the best time to plant Milkweed in pots. Milkweed plants in containers need full sunlight and will need water more often than plants grown in the ground. Butterflies are drawn to the flowers, so place potted plants near the edge of an outdoor space so the blooms are accessible to visiting butterflies. This plant has an upright growth habit, making it an excellent option for a large container on a deck or patio. As a perennial, this plant is more common in a bed or border, but both native Milkweed and tropical Milkweed can grow in pots or containers.
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