High-PK Bloom Boost
An 0-18-19 ratio delivers a concentrated dose of phosphorus and potassium specifically timed for peak floral development 3–4 weeks into the flowering stage.
Phosphorus & Potassium for Yield
Phosphorus and potassium are the two most critical elements during flowering — driving nutrient movement, energy conversion, and the structural support needed for heavy harvests.
Calcium for Cell Wall Integrity
At 5% calcium, BackCountry Blend Boost supports cell wall composition and helps maintain chemical balances in the soil throughout the bloom phase.
Humic Acid for Nutrient Uptake
Added humic acid improves the movement of nutrients through the grow medium, making phosphorus, potassium, and calcium more available and easier for roots to absorb.
Controlled-Release Granular
Granules release nutrients gradually as moisture activates them, providing a sustained bloom boost without the risk of nutrient burn from liquid PK additives.
Pairs with BackCountry Blend Bloom
Designed as a mid-flower companion to BackCountry Blend Bloom within GreenPlanet's BackCountry Blend Outdoor Feed Program for a complete outdoor season strategy.
CFIA Exempt
BackCountry Blend Boost is CFIA Exempt — fully compliant for sale and use in Canada, including by licensed producers and commercial outdoor cultivators.
Multiple Size Options
Available in 5 kg, 10 kg, and 20 kg formats to scale from home garden plots to large-scale commercial outdoor operations.