Updated: July 9, 2023

The Iron Cross plant, also known as the Oxalis triangularis, is a unique and eye-catching addition to any outdoor garden. With its distinctive clover-like leaves and deep purple color, it adds a touch of elegance and intrigue to any space. In this article, we will explore the steps to successfully grow Iron Cross plants outdoors.

Selecting the Right Location

Before getting started, it’s important to choose the right location for your Iron Cross plant. These plants thrive in partial shade or filtered sunlight, so avoid placing them in direct sunlight, as it can scorch their delicate leaves. Look for an area in your garden that receives dappled sunlight or is shaded for a portion of the day.

Preparing the Soil

Iron Cross plants prefer well-draining soil that is rich in organic matter. Before planting, prepare the soil by loosening it with a garden fork or tiller. Remove any weeds or debris and incorporate organic compost to improve the soil’s fertility and drainage. This will provide an optimal growing environment for your Iron Cross plant.

Planting Iron Cross Plants

Once you have prepared the soil, it’s time to plant your Iron Cross plants. Dig holes that are slightly larger than the root ball of each plant. Place the plants in the holes, ensuring that they are at the same depth as they were in their nursery containers. Gently backfill the holes with soil, lightly firming it around the plants while being careful not to damage their roots.

Watering and Fertilizing

Proper watering is crucial for the healthy growth of Iron Cross plants. These plants prefer consistently moist soil but can be sensitive to overwatering. Water them thoroughly after planting and then water them regularly, keeping the soil evenly moist but not waterlogged. To prevent root rot, ensure proper drainage by using well-draining soil and pots with drainage holes.

Fertilizing Iron Cross plants is also important to promote healthy growth and vibrant foliage. Use a balanced, water-soluble fertilizer once every two weeks during the growing season. Follow the instructions on the fertilizer package for the correct dilution ratio and application method.

Mulching and Weed Control

Mulching around Iron Cross plants can help retain moisture in the soil and suppress weed growth. Apply a layer of organic mulch, such as wood chips or straw, around the base of the plants, being careful not to cover the crown. Mulching also helps regulate soil temperature, keeping it cool during hot summer months and protecting the roots from extreme temperatures.

Regular weeding is necessary to prevent competition for nutrients and space. Remove any weeds that emerge near your Iron Cross plants to ensure their healthy growth.

Pruning and Maintenance

Iron Cross plants are relatively low maintenance but may require occasional pruning to maintain their shape and appearance. Remove any dead or damaged leaves by gently pinching them off at the base. This will encourage new growth and improve the overall health of the plant.

Overwintering Iron Cross Plants

Iron Cross plants are not frost-tolerant and need protection during winter months in areas with freezing temperatures. If you live in a region with cold winters, consider lifting your Iron Cross plants and bringing them indoors before the first frost. Place them in a cool location with indirect sunlight, such as a basement or garage.

During this dormant period, reduce watering and allow the soil to dry out slightly between waterings. Resume regular watering and bring your Iron Cross plants back outdoors in spring when the risk of frost has passed.

Dealing with Pests and Diseases

Iron Cross plants are generally resistant to pests and diseases. However, they can occasionally be affected by aphids or spider mites. Regularly inspect your plants for any signs of infestation, such as webbing or distorted leaves. If necessary, use an organic insecticidal soap to control the pests. Avoid using chemical pesticides, as they can harm beneficial insects and pollinators.

Conclusion

Growing Iron Cross plants outdoors can be a rewarding experience for any gardener. With their unique foliage and vibrant purple color, they add a touch of beauty and elegance to any garden or outdoor space. By selecting the right location, preparing the soil, and providing proper care and maintenance, you can enjoy the beauty of Iron Cross plants for years to come.