Summer Heat Selection

Keep Your Garden Thriving!
Give your plants the natural boost they need to stay strong, green, and productive through the hottest months. Shop our best biostimulants and summer essentials and enjoy 15% off with code HOTSUMMER.
Promotion ends August 16, 2026. 

23 products

Humax®12% | Humic Acid

Humax®12% | Humic Acid

From $24.30

White container with a label on a white background

KelpStim® (Originally Seamax®) | Natural Kelp Fertilizer

From $35.00

Phosgard® Plus 0-32-25 | Plant Nutrients for Soil and Foliar Application

Phosgard® Plus 0-32-25 | Plant Nutrients for Soil and Foliar Application

From $53.00

Biomin® Zinc

Biomin® Zinc

From $12.45

Humax bottle

Humax® | Humic Acid

From $10.55

Phosgard® 0-28-25 | Plant Nutrients for Soil and Foliar Application

Phosgard® 0-28-25 | Plant Nutrients for Soil and Foliar Application

From $11.75

Biomin® Calcium

Biomin® Calcium

From $39.25

Fulmax® | Concentrated Fulvic Acid

Fulmax® | Concentrated Fulvic Acid

From $35.10

Biomin® Zinc

Biomin® Zinc

From $39.35

Biomin® Calcium

Biomin® Calcium

From $12.45

Natural Wet® | Wetting Agent

Natural Wet® | Wetting Agent

From $12.65

Phosgard® 0-28-25 | Plant Nutrients for Soil and Foliar Application

Phosgard® 0-28-25 | Plant Nutrients for Soil and Foliar Application

From $52.50

Natural Wet® | Wetting Agent

Natural Wet® | Wetting Agent

From $56.75

Penex® | Soil Conditioner

Penex® | Soil Conditioner

From $31.05

Phosgard® Bio 0-28-25 | Plant Nutrients with Beneficial Microbes

Phosgard® Bio 0-28-25 | Plant Nutrients with Beneficial Microbes

From $53.00

Fulmag™ | Fertilizer

Fulmag™ | Fertilizer

From $11.95

Phosgard® 4-25-15 | Plant Nutrients for Soil and Foliar Application

Phosgard® 4-25-15 | Plant Nutrients for Soil and Foliar Application

From $52.50

Fulmag™ | Fertilizer

Fulmag™ | Fertilizer

From $35.10

Bio-Activate® | Natural Plant Growth Factor

Bio-Activate® | Natural Plant Growth Factor

From $65.00

Bio-Activate® Plus | Biofertilizer

Bio-Activate® Plus | Biofertilizer

From $65.00

Biomin® Zinc 20% Powder

Biomin® Zinc 20% Powder

From $64.40

Kelp Star™

Kelp Star™

From $70.50

Phosgard® Copper | Plant Nutrients for Soil and Foliar Application

Phosgard® Copper | Plant Nutrients for Soil and Foliar Application

From $60.00