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Purple Basil Plant Size:
Get the Right Size for You

Updated: July 21, 2023

When it comes to growing herbs in your garden or indoor space, basil is often at the top of the list. Its fragrant leaves and versatile culinary uses make it a favorite among many home cooks and garden enthusiasts. While the traditional green basil is commonly seen in gardens, there is another variety that adds a unique touch to any herb collection – purple basil. Purple basil not only stands out with its vibrant color but also offers a distinct flavor profile. If you’re considering adding purple basil to your herb garden, it’s important to understand its growth habits and choose the right size for your needs.

Understanding Purple Basil

Purple basil (Ocimum basilicum purpurascens) is a cultivar of sweet basil that features deep purple leaves. It is an annual herb that belongs to the mint family (Lamiaceae). Like its green counterpart, purple basil is easy to grow and requires similar care. However, its striking color makes it an excellent choice for decorative purposes as well.

Different Varieties and Sizes

There are several varieties of purple basil available, each with its own characteristics and size potential. Some of the most popular purple basil cultivars include:

  1. Dark Opal Basil: This variety of purple basil has large, ruffled leaves with a deep burgundy color. It can reach a height of 18-24 inches (45-60 cm) and has a bushy growth habit.

  2. Red Rubin Basil: Red Rubin basil has smaller leaves compared to Dark Opal but boasts a rich, dark purple color. It grows up to 12-18 inches (30-45 cm) tall and has a more compact habit.

  3. Purple Ruffles Basil: As the name suggests, this variety has deeply ruffled leaves that resemble lettuce. It grows between 12-18 inches (30-45 cm) in height and has a spreading, cascading growth habit.

  4. Amethyst Basil: Amethyst basil has small, narrow leaves that are intensely purple. It is a compact variety that reaches a height of 8-12 inches (20-30 cm).

Choosing the Right Size

The size of the purple basil plant you choose depends on several factors, including available space, intended use, and personal preferences. Here are some considerations to help you make the right decision:

Available Space

Before selecting a specific size for your purple basil plant, assess the available space in your garden or indoor area. If you have limited space, compact varieties like Red Rubin or Amethyst basil are ideal choices. These smaller plants can be grown in containers or even as part of a windowsill herb garden.

For larger gardens or outdoor spaces, you can opt for taller and bushier varieties like Dark Opal or Purple Ruffles. These plants can add height and texture to your garden beds or herb patches.

Intended Use

Consider how you plan to use your purple basil when deciding on the size. If you primarily want it for culinary purposes, smaller plants may suffice. Compact varieties can provide a steady supply of fresh leaves without taking up too much space. However, if you plan to use purple basil for decorative purposes, larger and more visually striking varieties may be preferable.

Personal Preferences

Ultimately, your personal preferences play a significant role in choosing the right size for your purple basil plant. Some gardeners prefer the visual impact of larger plants while others appreciate the convenience of smaller ones. Consider what appeals to you aesthetically and what fits well within your gardening style.

Growing Tips for Purple Basil

Regardless of the size you choose, purple basil requires similar growing conditions as green basil. Here are some tips to help you successfully grow and care for purple basil:

  1. Sunlight: Basil plants thrive in full sun, so choose a location that receives at least 6-8 hours of direct sunlight each day. If growing indoors, place your purple basil near a south-facing window or use grow lights to provide adequate light.

  2. Soil: Purple basil prefers well-draining soil with a slightly acidic to neutral pH (around 6.0-7.0). Amend the soil with organic matter such as compost to improve drainage and fertility.

  3. Watering: Keep the soil consistently moist but not waterlogged. Water your purple basil whenever the top inch of soil feels dry. Avoid overwatering, as it can lead to root rot and other issues.

  4. Fertilization: Feed your purple basil plants with a balanced organic fertilizer every 4-6 weeks during the growing season. This will provide them with essential nutrients for healthy growth.

  5. Pruning: Regularly pinch off the tips of your purple basil plants to encourage bushier growth and prevent them from becoming leggy. Harvesting leaves regularly will also promote continuous growth.

  6. Pest and Disease Control: Purple basil is generally resistant to pests and diseases, but common issues like aphids and fungal infections can still occur. Monitor your plants regularly and take appropriate measures if any problems arise.

By following these tips, you can successfully grow purple basil plants of any size and enjoy their visual appeal and culinary benefits.

Conclusion

Purple basil is a delightful addition to any herb garden, providing both aesthetic appeal and unique flavor. Choosing the right size for your purple basil plants depends on available space, intended use, and personal preferences. Whether you opt for a compact variety or a taller one, proper care and attention will ensure healthy growth and bountiful harvests of this vibrant herb. So go ahead, select the perfect size of purple basil for you and enjoy its beauty and culinary delights!

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