Earth Science Fast Acting Gypsum (25 lb.)
from $36.03 ($0.09 / Ounce)
Earth Science Fast Acting Gypsum - Soil Conditioner Adds Calcium, Repairs Salt Damage & Root Growth with Nutri-Bond Runoff Reduction Technology (2.5 lb)
from $11.99 ($0.30 / Ounce)
Gypsum Powder for Mushroom Substrate (1 lb), Lab Grade, Garden Soil Amendment (Calcium Sulfate Dihydrate), Packaged in HEPA Enclosure
from $8.99 ($0.56 / Ounce)
Organic Gypsum Powder 5LB - Made in USA - Calcium Sulfate Dihydrate - Garden Soil Amendment Fertilizer for Lawns, Plants, Mushroom Cultivation. Calcium & Sulfur. Cures Blossom End Rot. OMRI Listed
from $17.77 ($0.22 / Ounce)
Down to Earth Organic Garden Gypsum Calcium Sulfate, 5 lb
from $22.99 ($0.29 / Ounce)
(1.0-20.0 lbs) Mycology Basics - Bulk Ultra-Fine Lab Grade Gypsum for Mushrooms, Food Grade, No Additives - Packaged in HEPA filtrated Enclosure for Sterility (0.5 lbs)
from $6.95 ($0.87 / Ounce)
The Andersons NutraSoft DG Pelletized Gypsum 6,600 sq ft 40 lb Bag
from $29.49 ($0.05 / Fl Oz)
Espoma GG6 Garden Gypsum Fertilizer, 6-Pound (2)
$23.52 ($0.12 / Ounce)
from $17.99 ($0.09 / Ounce)
Supply Solutions Gypsum Powder - Purest and Soluble Houseplant Food Fertilizer for Indoor Plants, Outdoor, Lawn, Vegetables - Indoor Plant Nutrients, Improve Plant Growth (50 Pounds)
from $51.69 ($3.23 / Ounce)
Gypsum Powder - Ideal for Mushroom Substrate, Grain, and Soil, Promotes Healthy Mycelial Growth, Rich in Calcium and Sulfur, Enhances Root Strength & Fertility - Premium Lab-Grade (1, Pounds)
from $9.95 ($0.62 / Ounce)
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