How to Balance pH for Cleome (Spider Flower): A DIY Guide

Cleome, also known as Spider Flower, is a beautiful and unique addition to any garden. However, to ensure optimal growth and flowering, it’s crucial to maintain the right soil pH balance. In this article, we’ll guide you through the process of balancing the pH for Cleome using home remedies and DIY techniques.

Understanding the Ideal pH Range for Cleome (Spider Flower)

Cleome plants thrive in slightly acidic soil conditions, with a pH range between 6.0 and 7.0. If your soil pH is outside this range, it can affect the plant’s ability to absorb nutrients, leading to stunted growth and poor flower production.

How to Test Soil pH for Cleome (Spider Flower)

Cleome (Spider Flower)

Before adjusting your soil pH, it’s essential to determine its current level. You can do this by using a home testing kit or sending a soil sample to your local agricultural extension service. Home testing kits are readily available at garden centers and online retailers.

Adjusting Soil pH for Cleome (Spider Flower) Using Elemental Sulfur

If your soil pH is mildly alkaline (above 7.0), you can lower it by incorporating elemental sulfur into the topsoil. Follow these steps:

  1. Apply elemental sulfur at a rate of one pound per 100 square feet for every point below 6.0 you want to lower the soil pH.
  2. Work the sulfur into the soil thoroughly, ensuring even distribution.
  3. Wait one to two months before retesting the soil pH to allow the sulfur to take effect.

It’s important to note that lowering soil pH is a gradual process, and it may take several applications to achieve the desired level.

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Using Organic Matter to Lower Soil pH for Cleome (Spider Flower)

Cleome (Spider Flower) 2

For severely alkaline soil, consider using organic matter such as sphagnum peat or well-rotted pine needles as mulching materials around your Cleome plants. These materials are naturally acidic and can help lower soil pH over time.

  1. Apply a layer of sphagnum peat or well-rotted pine needles approximately two inches thick around each Cleome plant.
  2. As the organic matter decomposes, it will gradually lower the soil pH.
  3. Reapply the mulch as needed to maintain a consistent pH level.

Monitoring Temperature and Moisture for Optimal Cleome (Spider Flower) Growth

In addition to maintaining the proper soil pH, it’s crucial to monitor temperature and moisture levels for optimal Cleome growth. Follow these guidelines:

  1. Ensure daytime temperatures range from 80 to 85 degrees Fahrenheit (27 to 29 degrees Celsius) and nighttime temperatures stay between 68 and 70 degrees Fahrenheit (20 to 21 degrees Celsius).
  2. Avoid planting Cleome until after the last frost date, as they are not frost-tolerant.
  3. Keep the soil moist until germination occurs within 7 to 14 days.
  4. Avoid overhead watering, which can cause powdery mildew on Cleome leaves.
  5. After establishment, water deeply once a week if there is no rainfall during dry spells.

Feeding Cleome (Spider Flower) for Enhanced Flower Production

To encourage further flower production, feed your Cleome plants with a liquid organic plant feed high in potassium every couple of weeks while they are in bloom. You can use a homemade feed like comfrey tea for this purpose.

  1. Prepare comfrey tea by steeping comfrey leaves in water for several days until the liquid turns dark brown.
  2. Dilute the comfrey tea at a ratio of 1:10 with water before applying it to your Cleome plants.
  3. Apply the diluted comfrey tea around the base of the plants every two weeks during the blooming period.
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Deadheading and Maintenance for Cleome (Spider Flower)

To encourage continuous flower production and prevent excessive self-seeding, deadhead your Cleome plants regularly. Simply remove the spent flowers by pinching or cutting them off at the base of the stem.

Cleome plants typically bloom from mid-summer to fall, providing beautiful flowers for fresh or dried arrangements. With proper soil pH, temperature, moisture, and feeding, your Cleome plants will thrive and add a stunning visual interest to your garden.

Treatment Duration and Ongoing Care for Cleome (Spider Flower)

Balancing the soil pH for Cleome is an ongoing process that requires regular monitoring and maintenance. After the initial treatment with elemental sulfur or organic matter, retest your soil pH every 4 to 6 weeks to ensure it remains within the ideal range of 6.0 to 7.0.

Continue to monitor temperature and moisture levels throughout the growing season, adjusting your watering schedule as needed based on rainfall and temperature fluctuations. Consistently apply the comfrey tea feed every two weeks during the blooming period to support healthy flower production.

By following these DIY techniques and home remedies, you can successfully balance the pH for your Cleome plants, ensuring they thrive and provide a stunning display of flowers in your garden.

References:
1. https://youtu.be/-1J1QfkxACc
2. https://horticulture.co.uk/cleome/
3. https://www.thespruce.com/cleome-flower-spider-1315709