Live to Plant

How to Grow Stock Plant Outdoors

Updated: July 17, 2023

Gardening enthusiasts often seek to add beauty and fragrance to their outdoor spaces. One such plant that can accomplish both is the stock plant, also known as Matthiola incana. With its stunning, colorful flowers and delightful scent, the stock plant is a wonderful addition to any garden. In this article, we will explore the steps to successfully grow a stock plant outdoors.

Choosing the Right Location

The first step in growing a stock plant outdoors is selecting an ideal location for it to thrive. Stock plants prefer full sun, so choose a spot in your garden that receives at least six hours of direct sunlight each day. Additionally, ensure that the soil is well-draining to prevent waterlogging, as excessive moisture can lead to root rot.

Preparing the Soil

Before planting your stock plant, it is crucial to prepare the soil properly. Start by removing any debris, weeds, or rocks from the area where you plan to plant. Then, loosen the soil using a garden fork or tiller. This will improve drainage and create a favorable environment for the stock plant’s roots to grow.

After loosening the soil, enrich it with organic matter such as compost or well-rotted manure. This will provide essential nutrients and improve soil structure. Mix the organic matter into the soil thoroughly, ensuring it is evenly distributed.

Planting Stock Seeds or Seedlings

Once the soil is ready, you can proceed with planting stock seeds or seedlings. If you opt for seeds, sow them directly into the prepared soil according to the package instructions. It is essential to space them adequately to allow for proper growth and airflow between plants.

If you choose seedlings instead, dig holes in the prepared soil that are slightly larger than the root ball of each seedling. Gently remove the seedlings from their containers and place them in the holes. Fill in around the roots with soil, ensuring the seedlings are planted at the same depth they were in their containers.

Watering and Mulching

Proper watering is crucial for the successful growth of stock plants. After planting, water the soil thoroughly to ensure the roots receive enough moisture. However, avoid overwatering, as it can lead to root rot and other issues. Aim to keep the soil evenly moist but not saturated.

To help retain moisture and suppress weed growth, consider applying a layer of organic mulch around the base of the stock plants. This will also help regulate soil temperature and protect the roots during extreme weather conditions.

Fertilizing

Stock plants benefit from regular fertilization to support healthy growth and abundant flowering. About a month after planting, apply a balanced slow-release fertilizer according to the package instructions. This will provide a steady supply of nutrients over an extended period.

Additionally, you can supplement with liquid fertilizer every two to four weeks during the growing season. Choose a fertilizer specifically formulated for flowering plants and follow the recommended dosage on the packaging.

Supporting Growth

As stock plants grow taller, they may require support to prevent them from leaning or collapsing under their weight. To support their growth, install stakes or place plant supports near the base of each plant. Gently tie the stems to the stakes using soft materials such as twine or plant ties, avoiding any tight bindings that could damage the stems.

Regularly check the supports and adjust them as needed to accommodate the plant’s growth. This will help maintain a sturdy and upright shape while allowing the flowers to be showcased more effectively.

Pruning and Deadheading

To encourage continuous blooming and prevent seed formation, it is essential to prune and deadhead your stock plants regularly. Deadheading involves removing spent flowers by cutting them off just above a set of healthy leaves or buds. This practice redirects energy into producing new blooms rather than seed production.

Additionally, as the stock plant grows, you may need to prune it to maintain its shape and prevent it from becoming too leggy. Pruning can be done by cutting back the stems to a desired length. This will help promote bushier growth and ensure the plant remains compact and tidy.

Pests and Diseases

While stock plants are generally resilient, they can occasionally face pest and disease issues. Common pests that may affect stock plants include aphids, caterpillars, and snails. Regularly inspect your plants for any signs of infestation and take appropriate measures such as spraying insecticidal soap or using organic pest control methods to manage the pests.

In terms of diseases, stock plants can be susceptible to root rot, powdery mildew, and fungal infections. To prevent these issues, ensure proper soil drainage, avoid overwatering, and provide adequate airflow between plants. If necessary, treat affected plants with appropriate fungicides or consult with a local garden center for advice.

Conclusion

Growing a stock plant outdoors is a rewarding endeavor that can bring beauty and fragrance to your garden. By selecting the right location, preparing the soil properly, watering and fertilizing appropriately, supporting growth, and practicing regular pruning and deadheading, you can enjoy the vibrant blooms and delightful scent of this stunning plant throughout the growing season. With proper care, your stock plants will thrive and become a focal point in your outdoor space for years to come.