10 bestCompost Additivesof January 2026
112M consumers helped this year.
1
Molly's Aroid Mix - Premium Soilless Chunky Potting Mix for Tropical and Indoor Plants - Contains Orchiata Bark, Coco Chips, Worm Castings, Horticultural Charcoal, Mycorrhizae, & More. 5.5 Liters
veryplants
9.7
2
Wood Ash, Natural Fertilizer & Compost Booster (Wood Ash)
Generic
9.4
3
FCMP Outdoor - The Essential Living Composter, 2-Tray Worm Composter, Plum
FCMP Outdoor
9.1
4
Harris Horticultural Charcoal, Premium Biochar Soil Amendment for Plants and Terrariums, 2qt
HARRIS
8.8
5
Jobe's Organics Compost Starter 4-4-2 Organic Gardening Compost Accelerator, CGczwq 3Pack (4 pound bag)
Jobe's Organics
8.5
OtherUp to 5% off
Bokashi Plus™ Culture Mix 1 Kg
Dr. Connie's Compost Plus | 100x Concentrated Natural Compost Starter & Accelerator | All-Natural, Odor Control for Indoor & Outdoor Bins, Tumblers, and Piles | Fast Decomposition
Sweet PDZ - Healthy World Pet Deodorizer - Pet Habitat & Litter Box Additive - 3.5 lbs
Espoma Organic Traditions Compost Starter- 4 lb Bag BE4
6
Xtreme Gardening RTI Rt4402 Mykos, 2.2-Pound Bag
Xtreme Gardening
8.3
7
Roebic Laboratories CA-2.5-12 2-1/2-Pound Bacterial Compost Accelerator (3 Pack)
Roebic
8.0
8
TOP XIAN Basic Worm Farm Composting Bin, 3 Tray Worm Compost Bin- for Recycling Food Waste at Home (3-Tray 60L)
TOP XIAN
7.7
9
Bokashi Pro-GRO Fermented Fertilizer 6 Kg Bucket
My Good Green
7.4
10
Miracle-Gro Organics Pure Hen Manure Plant Food 3-1-2, 5kg
Miracle-Gro
7.1
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