What Not to Plant With Borage: A Gardener’s Guide

What Not to Plant With Borage?

When planting borage, it is important to avoid planting it with potatoes, fennel, and black walnut trees.

These plants should not be grown in close proximity to borage due to potential negative effects on growth and development.

Key Points:

  • Avoid planting borage with potatoes, fennel, and black walnut trees.
  • Close proximity to these plants may have negative effects on borage’s growth and development.
  • Borage should not be planted with potatoes, fennel, or black walnut trees.
  • These plants can cause potential harm to borage if grown together.
  • Planting borage separately from potatoes, fennel, and black walnut trees is recommended.
  • Borage’s growth and development may be hindered if planted with these specific plants.

Did You Know?

1. Did you know that planting borage with strawberries can actually enhance the flavor of the berries? Borage is known to attract important pollinators like bees, which can increase the rate of pollination and result in sweeter strawberries.

2. While borage is a great companion plant for many crops, it should not be planted alongside tomatoes. This is because borage may attract the tomato hornworm, a common tomato pest, which could cause damage to your tomato plants.

3. Borage has a fascinating history as a traditional herbal remedy. Ancient civilizations, such as the Romans and Greeks, used borage leaves to soothe and heal various ailments, including coughs, fevers, and even depression.

4. The vibrant blue flowers of borage are not only visually appealing but also edible! They make a stunning addition to salads, cocktails, and desserts. In fact, the flowers have a mild cucumber-like flavor, which provides a refreshing twist to culinary creations.

5. Borage is considered a natural pest repellent and can help deter certain harmful insects in the garden. For instance, planting borage near your squash plants can discourage squash bugs, which are notorious for damaging squash crops.

Incompatible Pairings: Potatoes

When planning your garden, it’s important to consider the compatibility of different plants. One plant that should not be grown alongside borage is potatoes. These two plants have conflicting needs and can adversely affect each other’s growth.

Potatoes prefer a slightly acidic soil, while borage thrives in alkaline soil conditions. When these two plants are grown together, the difference in soil pH can lead to nutrient deficiencies in both plants. Potatoes may suffer from a lack of available nutrients, resulting in stunted growth and reduced yields. Similarly, borage may struggle to absorb essential minerals like potassium, which is vital for its overall health and productivity.

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Furthermore, borage has an extensive root system that spreads quickly, potentially competing with potatoes for water and nutrients. This competition can inhibit the growth of both plants and result in an overall decrease in yield.

To ensure optimal growth and productivity, it is best to separate borage and potatoes in your garden.

  • Avoid planting borage and potatoes together
  • Potatoes prefer acidic soil, while borage thrives in alkaline soil
  • Difference in soil pH can lead to nutrient deficiencies
  • Borage’s extensive root system can compete with potatoes for water and nutrients

Avoid Planting Borage With Fennel

Another plant that does not pair well with borage is fennel. While both plants have their individual benefits, growing them together can lead to negative outcomes. Fennel is known for its strong aroma, which attracts beneficial insects like ladybugs and lacewings that help control pests in the garden. Unfortunately, borage has the opposite effect.

Borage attracts bees and other pollinators, which can interfere with the natural balance of predators and prey in the garden. When grown in close proximity, the allure of borage may divert beneficial insects away from fennel. As a result, fennel may become vulnerable to pests, compromising its growth and potentially reducing its overall yield.

Additionally, both borage and fennel are self-seeding plants, meaning they have a tendency to spread and reseed themselves. If grown together, their combined seed dispersal may result in an overwhelming amount of seedlings, making it difficult to maintain a well-organized garden.

To avoid these complications, it is recommended to separate borage and fennel in your planting layout.

  • Growing borage and fennel together can lead to negative outcomes:
  • Borage attracts bees and other pollinators, diverting beneficial insects away from fennel.
  • Fennel may become vulnerable to pests and experience compromised growth and reduced yield.
  • Both borage and fennel are self-seeding plants, which can result in an overwhelming amount of seedlings when grown together.
  • Separate borage and fennel in your planting layout.

“Growing borage and fennel together may disrupt the natural balance of pests and beneficial insects in the garden.”

Beware Of Black Walnut Trees And Borage Mixture

While borage can be a beneficial addition to many gardens, caution must be exercised when planting it near black walnut trees. Black walnut trees produce a chemical compound called juglone, which is toxic to many plants, including borage.

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Juglone is released by black walnut trees through their roots, leaves, and nut hulls. When borage comes into contact with juglone, it can experience wilting, yellowing, and eventually death. This is due to the compound’s ability to inhibit the growth and development of certain plants.

If you have a black walnut tree in your garden or the surrounding area, it is best to avoid planting borage nearby. The toxic effects of juglone can persist in the soil for several years, so even if a black walnut tree has been removed, caution should still be exercised when considering borage as a neighboring plant.

It is crucial to consider plant compatibility when planning your garden to ensure optimal growth and productivity. Potatoes, fennel, and black walnut trees are three examples of plants that do not pair well with borage. By avoiding these combinations, you can create a harmonious and thriving garden that rewards you with healthy and abundant yields.

  • Plant borage away from black walnut trees
  • Juglone released by black walnut trees is toxic to borage
  • Wilting, yellowing, and death can occur in borage when it comes into contact with juglone
  • Juglone’s inhibitory effect on certain plants is the cause of borage’s negative response
  • Even if a black walnut tree is removed, caution is still needed when considering borage as a neighboring plant
  • Plant compatibility is crucial for optimal growth and productivity
  • Potatoes, fennel, and black walnut trees do not pair well with borage


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Frequently Asked Questions

What can I plant next to borage?

In addition to its beneficial qualities as a companion plant for tomatoes, cabbage, strawberries, and squash, borage can also be planted alongside other herbs and flowers. Consider planting borage next to herbs such as rosemary, thyme, and oregano. These herbs not only enhance the flavors of culinary dishes but also attract beneficial insects like bees and hoverflies. Furthermore, borage can be paired with flowering plants such as marigolds and calendula, adding a touch of vibrant color to your garden while promoting pollination and repelling certain pests.

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What does borage do to the soil?

Borage, with its abundant self-seeding abilities, not only brings beauty and charm to gardens but also offers significant benefits to the soil. As it grows, borage adds essential trace minerals into the soil, enriching its fertility and supporting the growth of other plants. This remarkable herb serves as a natural source of nutrients, acting as a catalyst for the soil’s overall health and vitality. Furthermore, its ability to thrive in full sun makes it a resilient choice for gardeners seeking a low-maintenance plant that requires little intervention or reseeding efforts once initially planted. Embracing borage in your garden ensures a self-sustaining ecosystem where the soil receives a continuous supply of essential minerals and the need for reseeding becomes a thing of the past.

Can you plant marigolds and borage together?

Yes, marigolds and borage can be planted together in the garden. Borage is known to be an excellent companion plant for cruciferous vegetables, offering protection against certain pests. Similarly, marigolds are also beneficial companion plants for a variety of vegetables and flowers. By planting these two together, you not only enjoy the vibrant colors of both plants but also harness the benefits of their pest-deterring properties, creating a harmonious and protective environment for your garden.

What are the best growing conditions for borage?

Borage flourishes in optimal growing conditions that include full sun exposure with the ability to tolerate light shade. While it is adaptable to various soil types, it thrives in well-drained soil that is not waterlogged. To ensure robust growth, borage appreciates moist soil in the summer months. Additionally, this versatile herb can be successfully cultivated in containers, offering flexibility to gardeners seeking alternative growing methods.

References: 1, 2, 3, 4

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