Can You Plant Kale, Nasturtiums, and Cosmos Together?

Companion planting is a popular strategy among gardeners seeking to maximize space, improve plant health, and enhance the aesthetic appeal of their gardens. Kale, nasturtiums, and cosmos are three plants that, when planted together, can complement each other beautifully. In this article, you’ll discover whether these plants are compatible, their individual growing requirements, the benefits and challenges of planting them together, and practical tips for success.

Compatibility Analysis

Yes, you can plant kale, nasturtiums, and cosmos together. These plants can thrive in the same garden space due to their complementary growth habits and beneficial interactions. Kale, a leafy green, benefits from the pest-repelling properties of nasturtiums, while cosmos attract pollinators, enhancing the garden’s biodiversity. Key factors such as similar sunlight needs and non-competitive growth habits make them compatible companions.

Growth Requirements Comparison Table

Benefits of Planting Together

Planting kale, nasturtiums, and cosmos together offers several advantages:

• Pest Repellent Properties: Nasturtiums act as a trap crop, drawing pests away from kale and cosmos. This natural pest control reduces the need for chemical pesticides.
• Improved Growth: The presence of cosmos attracts pollinators, which can enhance the overall health and growth of the garden.
• Space Efficiency: Their varied growth habits allow for efficient use of garden space, with nasturtiums trailing and cosmos providing vertical interest.
• Soil Health Benefits: Nasturtiums can improve soil quality by fixing nitrogen, benefiting nutrient-demanding plants like kale.
• Pollinator Attraction: Cosmos are known for attracting bees and butterflies, which can help with pollination and biodiversity.

Potential Challenges

Despite their compatibility, there are challenges to consider:

• Resource Competition: Kale requires more nutrients, which can lead to competition if soil fertility is not maintained.
• Different Watering Needs: Kale prefers consistent moisture, whereas nasturtiums and cosmos can tolerate drier conditions.
• Disease Susceptibility: Kale can be prone to diseases that do not affect nasturtiums or cosmos, necessitating careful monitoring.
• Harvesting Considerations: Harvesting kale may disturb the roots of nearby plants if not done carefully.

Practical Solutions

• Balanced Fertilization: Use organic compost to maintain soil fertility and support kale’s nutrient needs.
• Irrigation Management: Implement drip irrigation to deliver consistent moisture to kale, while allowing nasturtiums and cosmos to dry slightly between waterings.
• Disease Monitoring: Regularly check kale for signs of disease and apply organic treatments as needed.

Planting Tips & Best Practices

• Optimal Spacing: Ensure sufficient spacing to allow air circulation and prevent overcrowding.
• Timing: Plant kale in early spring or fall, while nasturtiums and cosmos can be sown after the last frost.
• Container vs. Garden Bed: All three plants can thrive in containers, which can be a great option for small spaces.
• Soil Preparation: Enrich soil with organic matter to support healthy growth.
• Additional Companion Plants: Consider adding marigolds or basil, which also pair well with kale and cosmos.

FAQ Section

Can you plant kale and nasturtiums in the same pot?
Yes, but ensure the pot is large enough to accommodate their growth and provide adequate nutrients.

How far apart should these plants be planted?
Space kale and cosmos 12-18 inches apart, and nasturtiums 10-12 inches apart for optimal growth.

Do kale and cosmos need the same amount of water?
Kale prefers more consistent moisture, while cosmos can tolerate drier conditions.

What should not be planted with kale, nasturtiums, and cosmos?
Avoid planting fennel near these plants, as it can inhibit their growth.

Will nasturtiums affect the taste of kale?
No, nasturtiums will not affect the taste of kale, but they can deter pests.

When is the best time to plant these plants together?
Plant kale in early spring or fall, and sow nasturtiums and cosmos after the last frost in spring.

By understanding the compatibility and requirements of kale, nasturtiums, and cosmos, you can create a thriving garden that is both beautiful and productive.