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Person applying Soil Booster soil amendment made from vermicompost into garden bed.

Soil Booster Instructions

Step-by-step guide for applying Soil Booster liquid vermicompost. Get the best results for houseplants, garden beds, and container plants.

What you need to know about Sunday Organics Soil Booster

Soil Booster is 100% liquid vermicompost made from worm castings. This concentrated soil amendment enriches your soil with natural nutrients and beneficial microorganisms, creating healthier, more resilient plants indoors and out.

Sunday Organics Soil Booster Soil Amendment

Sunday Organics Soil Booster Soil Amendment

  • Liquid worm compost
  • For house plants, gardens & more!
  • Easy to apply and store
  • Covers up to 200 sq. ft.

Where to apply Soil Booster

  • Indoor and outdoor plants
  • Vegetables, flowers, and houseplants
  • Newly seeded or patched lawn areas

When to apply Soil Booster

Soil Booster enhances nutrient uptake, making it an ideal pre-fertilizer treatment during the growing season. Apply in early morning or late afternoon 24-48 hours before fertilizer application.

How to apply Soil Booster

1

Shake well

Shake the bottle thoroughly before use to mix the liquid compost.

2

Choose your application method

Hose-end sprayer method:

  1. Attach the garden sprayer to the Soil Booster container
  2. Connect your hose to the sprayer nozzle
  3. Turn on water and open the fertilizer valve to spray

Watering can method:

  1. Mix 1 part Soil Booster with 4 parts water
  2. Stir well to combine
3

Apply to soil

Saturate the soil around the base of plants until thoroughly moistened.

  • Hose-end sprayer: Spray evenly around plant base
  • Watering can: Pour mixture around plant base
4

Let soil dry

Allow the product to dry completely before applying other treatments. Store any leftover product for your next application.

Soil Booster application tips

  • Apply at least 3 times per growing season.
  • For best results, use up to once per week.
  • Avoid applying in direct sunlight.
  • Do not apply simultaneously with fertilizers.
  • Use on any indoor or outdoor plants, including your lawn!
  • Use within a single growing season

Soil Booster FAQs

What is vermicompost?

Vermicompost is essentially worm poop—or as our scientists would say: the nutrient-rich material created when worms digest organic matter.

As food waste passes through the worm's digestive system, harmful bacteria are deactivated, leaving behind beneficial worm castings packed with nutrients and microorganisms aka delicious food for your plants!

What are the benefits of vermicompost?

Vermicomposting diverts food waste from landfills, where decomposition without oxygen produces methane, a harmful greenhouse gas. By using worms to break down organic matter in oxygen-rich compost bins, vermicomposting reduces landfill waste and greenhouse gas emissions while creating exceptional plant nutrition. Win-win.

How do I use it with other Sunday products?

Let Soil Booster dry completely before applying other products. For best nutrient absorption, apply Soil Booster a few hours to several days before using Sunday liquid fertilizers.

For optimal results, combine Soil Booster with:

  • Sunday fertilizers
  • Weed control products
  • Garden soil amendments

This combination helps you fertilize properly, reduce weeds, and rebuild soil health.

​​How and where do I store products?

Store upright with cap tightly closed. Use within a single growing season, and don't store for more than one year.

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Photograph of author in prairie field

Teri Valenzuela

Teri Valenzuela holds a B.A. in Environmental Biology and leads science communications at Sunday, specializing in translating technical subject matter into engaging, accessible content. Previously, she led conservation work at the National Audubon Society, managing ecological restoration and community programs.

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