Kale powder
Kale powder suppliers and sourcing guide
Kale powder is made from the leaves of kale (Brassica oleracea, Acephala group), a leafy vegetable in the cabbage family. Fresh leaves are washed, often blanched, sometimes stripped of the tough midribs, then air-dried, drum-dried or freeze-dried and milled to a green powder. Brands buy whole-leaf powder, juice powder made by drying pressed kale juice, and organic grades for greens blends, drink mixes, pasta, snacks and capsules.
- Category
- Food staples and powders
- Also known as
- Brassica oleracea var. sabellica · Brassica oleracea var. viridis · Dried kale · Kale leaf powder
- Facts checked
- November 2026
Forms and grades of kale powder
Suppliers sell different products under the same name. Specify the one you need.
Air-dried leaf powder
The most common grade: dried whole leaf milled to a fine powder, with a darker, more olive color than freeze-dried.
Freeze-dried powder
Brighter green with fresher flavor, at a higher price; more hygroscopic than air-dried powder.
Juice powder
Pressed kale juice dried on its own or on a carrier such as maltodextrin; lower in fiber and more soluble in drinks.
Organic
Powder from certified organic kale, widely offered and often requested for greens blends.
Cut and sifted or flakes
Coarser dried leaf for teas, seasonings and visible inclusions rather than fine blending.
What to check on the COA
Compare each result with your own specification when the lot arrives.
- Identity and appearance
- Color, odor, taste and texture against a retained reference, with microscopy for leaf structure when adulteration with other greens is a concern.
- Moisture
- Loss on drying, often with water activity; dried greens are typically held to a few percent moisture to prevent caking and microbial growth.
- Microbiology
- Total plate count, yeast and mold, coliforms, E. coli, Salmonella and Listeria; leafy greens often have no full kill step, so these results matter.
- Heavy metals
- Lead, cadmium, arsenic and mercury by ICP-MS, since leafy greens can take up metals from soil.
- Pesticide residues
- Multi-residue screen by GC-MS/MS and LC-MS/MS, or proof of organic certification with periodic testing.
- Particle size
- Sieve analysis (for example percent through 80 mesh), which affects dispersion in drinks and mouthfeel.
Storage, lots and expiry
Storage and shelf life
Store kale powder sealed in lined bags or drums in a cool, dry, dark place; it picks up moisture and cakes, and its green color fades with light, heat and air. Reseal opened bags promptly or transfer them to smaller airtight containers. Shelf life is set by the supplier's specification, and aged stock is usually retested for color, moisture and microbiology before use.
Lots and expiry dates
Color, moisture and microbial counts vary with harvest, kale variety, blanching and drying method. Record the drying method, country of origin and organic certificate for each lot, and compare color against a retained sample.
Regulatory status
Facts from regulators and standards bodies, each linked to its source.
A Health Canada natural health product monograph lists Brassica oleracea var. viridis, whose common names include collards and kale, with the leaf, dry or fresh, as its source part.
Source: webprod.hc-sc.gc.ca (opens in a new tab)USDA's grade standards for fresh kale define U.S. No. 1 as kale of one type that is well trimmed, not stunted, and free from decay and from damage caused by yellow or discolored leaves and other defects.
Source: ams.usda.gov (opens in a new tab)
This is general information, not regulatory advice. Status differs by country and by how the ingredient is used, so check the rules for your product and market.
Kale powder suppliers
Manufacturers and distributors whose own websites say they sell it.
We are checking kale powder suppliers now
Every listing is checked against the supplier’s own website before it goes live, so this list fills in over the coming weeks. The specs and COA checklist above are ready today.
Sell kale powder? Request a listingFrequently asked questions
What forms of kale powder can brands buy?
Common forms include air-dried leaf powder, freeze-dried powder, juice powder, organic and cut and sifted or flakes. Ask each supplier for the specification sheet of the exact grade they quote.
What should the COA for kale powder include?
Expect identity and appearance, moisture, microbiology, heavy metals, pesticide residues and particle size, each with its method, specification and result for that lot.
How should kale powder be stored?
Store kale powder sealed in lined bags or drums in a cool, dry, dark place; it picks up moisture and cakes, and its green color fades with light, heat and air. Reseal opened bags promptly or transfer them to smaller airtight containers. Shelf life is set by the supplier's specification, and aged stock is usually retested for color, moisture and microbiology before use.
What is the regulatory status of kale powder?
A Health Canada natural health product monograph lists Brassica oleracea var. viridis, whose common names include collards and kale, with the leaf, dry or fresh, as its source part. USDA's grade standards for fresh kale define U.S. No. 1 as kale of one type that is well trimmed, not stunted, and free from decay and from damage caused by yellow or discolored leaves and other defects.
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