How to Grow Purple Oxalis Plant Outdoors

Purple Oxalis, also known as Oxalis triangularis, is a stunning plant that adds a pop of color to any garden. Its deep purple leaves and delicate pink flowers make it an eye-catching addition to outdoor spaces. If you’re looking to grow this beautiful plant in your garden, here are some tips to help you get started.

Choosing the Right Location

Before you start planting your Purple Oxalis, it’s important to find the right location in your garden. This plant thrives in partial shade, so look for an area that receives a few hours of direct sunlight each day but is shaded for the rest of the time. Avoid placing it in full sun, as this can cause the leaves to lose their vibrant purple color.

Additionally, Purple Oxalis prefers well-draining soil. If your garden has heavy clay soil, consider amending it with organic matter such as compost or peat moss to improve drainage.

Planting Purple Oxalis

Once you’ve found the perfect location, it’s time to plant your Purple Oxalis. Follow these steps for successful planting:

1. Dig a hole that is slightly larger than the root ball of the plant.
2. Place the plant in the hole, making sure that the top of the root ball is level with or slightly above the surrounding soil.
3. Backfill the hole with soil, gently firming it around the plant.
4. Water thoroughly to settle the soil and help the plant establish.

Watering and Care

Purple Oxalis requires regular watering to thrive. Keep the soil evenly moist but not waterlogged. Check the moisture level by sticking your finger about an inch into the soil; if it feels dry, it’s time to water.

During hot summer months, you may need to water more frequently, as the plant can be sensitive to heat and dry conditions. Mulching around the base of the plant can help retain moisture and regulate soil temperature.

In terms of care, Purple Oxalis is relatively low-maintenance. However, it’s important to regularly remove any dead or damaged leaves to promote healthy growth. You can also pinch back the stems to encourage bushier growth and prevent the plant from becoming leggy.

Fertilizing

Purple Oxalis benefits from regular fertilization during the growing season. Use a balanced, water-soluble fertilizer once every two weeks or follow the instructions on the packaging for best results. Be careful not to over-fertilize, as this can lead to excessive foliage growth at the expense of flowers.

Propagation

If you want to expand your Purple Oxalis collection or share it with friends, propagation is a straightforward process. The plant can be propagated through division or by planting bulbils, which are small bulb-like structures that form on the stems.

To propagate through division:

1. Carefully dig up the plant and gently separate the clumps into smaller sections, ensuring each section has some roots attached.
2. Replant the divisions in pots or directly in the garden, following the same planting instructions mentioned earlier.
3. Water thoroughly and provide proper care until the new plants establish.

To propagate through bulbils:

1. Wait until the bulbils form on the stems, usually in late summer or early fall.
2. Gently detach the bulbils from the stem and plant them directly in pots or in a prepared garden bed.
3. Keep the soil moist and provide appropriate care until they sprout and grow.

Winter Care

Purple Oxalis is not frost tolerant, so if you live in a region with cold winters, you’ll need to take some precautions to ensure its survival. Before the first frost, cut back the foliage to about an inch above the soil level. Mulch around the base of the plant with a layer of straw or leaves to insulate the roots during winter.

You may also consider digging up the plant and storing it indoors during the winter months. Place the bulbs in a cool, dark location with temperatures around 50-55°F (10-13°C). Keep them dry and check regularly for signs of rot or pests.

Conclusion

Growing Purple Oxalis outdoors can be a rewarding experience. With its vibrant purple leaves and delicate pink flowers, this plant adds a touch of elegance to any garden. By following these tips on choosing the right location, planting, watering, care, propagation, and winter care, you’ll be well on your way to growing a thriving Purple Oxalis plant in your own outdoor space. Enjoy the beauty it brings and happy gardening!