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8 sweet potato companion plants and what you should avoid
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Companion planting for sweet potato is an experience-based observation developed over centuries. People have noticed that planting certain plants side by side has a positive effect on each other, increasing the quality and quantity of the harvest. Companion planting is not set in stone and it is the least you can do for your plants. You can get the right care from the individual plant article. You can see the companion and the enemy plants of sweet potato below.

Companion plants for sweet potatoEnemy plants of sweet potato
MarigoldSquash
NasturtiumsPumpkin
BeansCantaloupe
TomatoWatermelon
Radish
Thyme
Yarrow
Basil

Why does companion planting work?

Companion planting works due to several interconnected factors:

  1. Pest Control: Certain plants emit natural chemicals or scents that repel pests, effectively acting as natural pest deterrents for nearby plants. This reduces the need for chemical pesticides and fosters a more balanced ecosystem.

  2. Attracting Beneficial Insects: Some companion plants attract beneficial insects like ladybugs, hoverflies, and predatory wasps, which feed on common garden pests. This creates a natural form of pest control and helps maintain ecological balance.

  3. Soil Improvement: Different plants have varying root structures and nutrient requirements. Companion planting can enhance soil health by reducing soil erosion, suppressing weeds, and improving nutrient uptake. For example, leguminous plants fix nitrogen in the soil, benefiting neighboring plants that require nitrogen for growth.

  4. Competition Reduction: Companion planting can help reduce competition for resources such as water, sunlight, and nutrients by utilizing plants with complementary growth patterns and root structures. This allows for more efficient resource utilization and healthier plant growth.

  5. Biodiversity and Resilience: Planting diverse species together increases biodiversity in the garden, which can enhance ecosystem resilience. A diverse ecosystem is better equipped to withstand pests, diseases, and environmental stresses compared to monocultures.

  6. Maximizing Space: Companion planting allows gardeners to make the most of limited space by intercropping plants with different growth habits and maturity rates. This maximizes yield per square foot and promotes efficient land use.

Overall, companion planting capitalizes on the natural synergies between plant species, creating a thriving and sustainable garden ecosystem.

What are the companion plants of sweet potato?

The following plants have positive effects on the growth of your sweet potato. These plants can repel pests that damage your plants. These plants provide increased nutrition to the soil that your plants can use. Therefore, we recommend planting these plants next to your sweet potato.

Marigold

Marigold flourishes in well-drained, loamy soil with a pH range between 6.0 and 7.0. Full sunlight and consistent moisture nurture its colorful flowers and aromatic foliage. Marigold provides invaluable benefits to neighboring plants by repelling pests, attracting pollinators like bees and butterflies, and enhancing overall garden biodiversity.

Nasturtiums

Nasturtiums thrive in various soil conditions. Flourishing in well-drained, moderately fertile soil with a pH range between 6.0 and 7.0. Full sunlight and consistent moisture nurture their vibrant flowers and trailing foliage. Nasturtiums offer invaluable benefits to neighboring plants by attracting pollinators, repelling pests, and adding a touch of vibrant color to garden landscapes.

Beans

Beans are thriving in well-drained soil and basking in ample sunlight, these leguminous wonders enrich the soil with nitrogen, enhancing the vitality of their botanical companions. As stalwart providers of sustenance and greenery, beans epitomize the essence of garden bounty and vitality.

Tomato

Tomatoes thrive in various soil conditions. Flourishing fertile soil with a pH range between 6.0 and 7.0. Full sunlight and consistent moisture nurture their sprawling vines and abundant fruiting. Tomatoes provide invaluable benefits to neighboring plants by attracting pollinators, suppressing weed growth with their dense foliage, and adding richness to culinary dishes.

Radish

Radishes thrive in loose soil with a pH range between 5.5 and 7.0, they embody adaptability and zest. Full sunlight and consistent moisture nurture their rapid growth and vibrant foliage. Radishes provide invaluable benefits to neighboring plants by breaking up compacted soil, improving soil aeration, and suppressing pest populations.

Thyme

Thyme grows sandy or loamy soil with a pH range between 6.0 and 8.0. Full sunlight and moderate moisture nurture its flavorful foliage and compact growth. Thyme provides invaluable benefits to neighboring plants by repelling pests, attracting beneficial insects, and enhancing overall garden biodiversity.

Yarrow

Yarrow grows in well-drained, sandy or loamy soil with a pH range between 5.5 and 7.0. Full sunlight and moderate moisture nurture its delicate flowers and fern-like foliage. Yarrow provides invaluable benefits to neighboring plants by attracting pollinators, repelling pests.

Basil

Basil, with its aromatic leaves and culinary versatility, transcends its role as a mere herb, emerging as a cornerstone of companion gardening practices. Beyond its culinary appeal, basil offers a multitude of benefits to the garden ecosystem, serving as a beacon of fragrance and functionality in both kitchen and cultivation.

What should you not plant next to sweet potato?

Planting these plants next to sweet potato has a huge negative effect on the development of your plant. Growing enemy plants can appeal detrimental insects, change the taste of the grown plant and even consuming all of the nutrients and water from your sweet potato. Because of these negative effects, we don’t recomment growing the plants below next to your sweet potato.

Squash

Squash thrives in well-drained, nutrient-rich soil with a pH range between 6.0 and 7.5. Full sunlight and ample space nurture its sprawling vines and prolific fruiting. Squash provides invaluable benefits to neighboring plants by shading the soil, conserving moisture, and suppressing weed growth with its broad leaves. Belonging to the Cucurbitaceae family, alongside esteemed companions like pumpkins and cucumbers.

Pumpkin

Pumpkins, known for their gourd-like fruits and garden splendor, grow in various soil conditions. Flourishing in well-drained, nutrient-rich soil with a pH range between 6.0 and 7.5. Full sunlight and ample space nurture their sprawling vines and prolific fruiting. Pumpkins provide invaluable benefits to neighboring plants by shading the soil, conserving moisture, and suppressing weed growth with their dense foliage.

Cantaloupe

Cantaloupe bloom in various growing conditions. Flourishing in well-drained soil bathed in ample sunlight, it exemplifies adaptability and vigor. Consistent watering and proper spacing encourage robust vine growth and abundant fruiting. Belonging to the Cucurbitaceae family, alongside esteemed companions like cucumbers and pumpkins, cantaloupe epitomizes the lush abundance and natural delight found within the garden's bounty.

Watermelon

Watermelons thrive in various soil conditions. Flourishing in well-drained, fertile soil with a pH range between 6.0 and 6.8. Full sunlight and ample space nurture their sprawling vines and juicy fruiting. Watermelons provide invaluable benefits to neighboring plants by shading the soil, conserving moisture, and enriching the soil with organic matter as their vines decompose.