Green Planet Nutrients Karbo Boost

Your plants will get that extra push they need during the flowering stage thanks to this powerful blend that adds carbohydrates to feed beneficial microbes and support essential plant function.


Free shipping available for orders $100 or more. Manufacturer Direct and special order items may require extra charges. See the Docs & Downloads section for product labels and other important information. Questions? Contact us!

Product Features List
  • Boosts taste, weight, and overall yield
  • Provides a clean energy source that supports heavy fruiting
  • Helps plants absorb more water and oxygen
  • Easy to use
  • Available in various sizes

Your plants work hard when flowering and fruiting and they need the extra energy that comes from Karbo Boost. This special formulation uses naturally occurring carbohydrates to enhance microbes in the soil and provide sugars normally produced through photosynthesis to the plant directly during flowering.


Please select a variation to see its technical specifications


Dissolve 1 oz (30 g) of Karbo Boost into 25 gallons of water. Use every watering throughout the flowering cycle.


Customer Reviews

No reviews to show
We Think You Will Love These
Plant a seed with us—the more you buy, the more your savings grow! How it works: every dollar you spend earns you points you can redeem for discounts on future orders. Plus, you’ll get exclusive rewards, coupons, and a whole host of special offers.
Want to be the first to hear about new products, get tips from our expert growers, and receive exclusive coupons? Sign up for our newsletter! You’ll also get advanced notice of special GardenTap sales and promotions. It’s a win-win!

Sign Me Up!

We’re so excited that you’re joining us! You’ll be the first to get the inside scoop on great new products and promotions, useful growing tips from our experts, and exclusive coupons—so you can save money while building the garden of your dreams. Let’s do this!
Chat Available