Best Organic Hemp Hearts

Last updated: August 11, 2026

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The short version

After researching the certifications, sourcing, and processing of the most popular organic hemp hearts, our top pick is Manitoba Harvest Regenerative Organic Certified Hemp Hearts, 12 oz. It carries Regenerative Organic Certification, which is USDA organic plus audited soil health, animal welfare, and farmworker fairness, and delivers 10 g of complete plant protein per 30 g serving, which is why it earned our highest Organic Integrity Score of 93 out of 100. For the best value, the 18 oz bag is our pick, and for bulk, the 5 lb is the best choice.

Hemp hearts are one of the few genuinely easy nutrition wins in a pantry, and the category is dominated by a single producer for reasons that turn out to be legitimate. We flag each product’s certification, size, and format. Scores below run from our 93-point top pick to the 81-point starter bag.

Key things to look for in organic hemp hearts

Good hemp hearts come down to certification, freshness, hulling quality, and packaging. Here is what matters.

1. USDA organic, ideally Regenerative Organic Certified

Hemp is a bioaccumulator that draws contaminants from soil readily, which makes where and how it was grown genuinely important.

2. Pale green colour, not brown

Fresh hemp hearts are creamy white to pale green. Browning or grey tones indicate oxidation and age.

3. Clean hulling

Good hearts are soft throughout. Gritty or crunchy bits mean shell fragments left in from sloppy dehulling.

4. Resealable, opaque packaging

Hemp hearts are high in polyunsaturated fat and go rancid quickly. A resealable opaque bag beats a clear tub.

Why hemp is worth buying organic specifically

The case for organic certification is stronger here than for most seeds, and it is a soil argument rather than a pesticide one.

Hemp is a bioaccumulator. The plant is unusually efficient at drawing substances out of soil and concentrating them in its tissue, which is precisely why it has been studied and used for phytoremediation, the practice of planting crops to clean contaminated ground. That property is excellent when you want to clean soil and less appealing when you want to eat the seed. Heavy metals, particularly cadmium and lead, are the specific concern, and they come from the soil rather than from spraying. Organic certification does not directly test for heavy metals, but it does require documented land history and prohibits many soil amendments that carry contaminants, which meaningfully shifts the odds.

Regenerative Organic Certification goes further. ROC requires organic certification as a baseline, then audits soil health practices, animal welfare, and farmworker fairness on top. For a crop where soil quality directly affects what ends up in the seed, that is a more relevant certification than most, and it is the reason our top pick sits where it does.

The nutrition is genuinely good, without needing exaggeration. Complete protein at around 10 g per 30 g serving is legitimately impressive for a plant food. The omega ratio is favourable. What is worth stating plainly is the same caveat that applies to flaxseed: hemp’s omega-3 is alpha-linolenic acid, which the body converts to EPA and DHA at a low rate. Hemp hearts are an excellent food; they are not a substitute for oily fish or an algal supplement if EPA and DHA are the goal.

On THC. Hemp hearts contain no meaningful THC or CBD, since those concentrate in the flower and leaf rather than the seed kernel. Trace amounts from hull contact are possible but far too low to have any effect. The occasional story about a failed drug test relates to poorly cleaned whole seed rather than properly hulled hearts.

Hemp hearts nutrition, and the omega ratio that stands out

The magnesium figure is the underrated one. Around 250 mg in three tablespoons is a substantial share of a day’s requirement from a single spoonable ingredient, and magnesium is one of the more commonly under-consumed minerals. Protein makes up roughly a quarter of hemp hearts’ calories, which is high for a seed.

Why the omega ratio matters. Hemp hearts sit at roughly 2:1 to 3:1 omega-6 to omega-3, which is unusually favourable. Typical Western diets run far higher, often cited around 15:1 or worse, driven by refined seed oils in processed food. Hemp is one of very few foods that supplies meaningful amounts of both linoleic acid and alpha-linolenic acid in something close to the proportions commonly recommended. The same ALA caveat as flaxseed applies: ALA converts to EPA and DHA at a low rate, so hemp is not a replacement for oily fish or an algal supplement.

Hearts versus whole seed. Hemp hearts are the hulled kernel, so they lose most of the fibre that the intact shell provides while keeping essentially the same protein, fat, and mineral content. If fibre is what you are after, whole hemp seed or another seed serves you better.

Heavy metals and mould: what independent testing found

Because hemp is a bioaccumulator, heavy metals are the concern people raise, and independent testing has produced a slightly surprising answer about where the real risk sits.

Heavy metals came back reassuring. ConsumerLab testing across a range of hemp seed products, including Manitoba Harvest, Bob’s Red Mill, Terrasoul, Kirkland, Trader Joe’s, and 365, found none exceeded California Prop 65 limits for lead, cadmium, arsenic, or mercury. That is a genuinely good result for the category and worth stating plainly rather than stoking anxiety.

Mould was the actual finding. The more useful result from that testing was mould contamination, which varied considerably between products. Notably, the product with the highest mould count also carried the most cadmium, around three times any other tested, which suggests general quality control rather than hemp itself being the problem.

What follows practically. Buy from brands with high turnover and good handling, check the seeds smell fresh and nutty rather than musty when you open the bag, store them refrigerated or frozen once opened, and do not buy more than you will get through in a couple of months. Mould thrives on the moisture and warmth that a bag of high-fat seeds sitting in a cupboard provides, and a musty smell is your signal to bin it.

How to choose organic hemp hearts

• Confirm USDA organic, and prefer Regenerative Organic Certified where available.
• Check the colour: creamy white to pale green, not brown or grey.
• Look for a resealable opaque bag rather than a clear tub.
• Buy a size you will finish in two or three months, and refrigerate after opening.
• Compare per pound, since bag sizes vary widely and the spread is large.

Who should buy organic hemp hearts

The right bag depends on how much you eat. If you want the highest certification standard, our top pick fits. If you want the best price per pound, a bulk supply, a standard everyday bag, or a small one to try, we have a pick for each.

Our top organic hemp hearts at a glance

Scores are ours, based on independent research of certification level, sourcing and soil practices, hulling quality, packaging, freshness handling, and price per pound, using the same 10-criteria method we apply to every product. See how we research and rate.

Best overall: Manitoba Harvest Regenerative Organic Certified Hemp Hearts, 12 oz

This is the pick because of the certification. Regenerative Organic Certified requires USDA organic as a starting point, then audits soil health, animal welfare, and farmworker fairness on top, and for a bioaccumulating crop like hemp, soil practice is not an abstract ethical nicety, it directly affects what ends up in the seed. Manitoba Harvest is the dominant hemp food producer in North America with genuine scale and consistency behind it, and the hearts are soft, pale, and clean-tasting, with 10 g of complete protein and 12 g of omegas per 30 g serving.

The trade-off is price. ROC certification costs money and it shows on the shelf, so this sits above the standard organic version of essentially the same product. Twelve ounces also disappears fast if you are putting two tablespoons on everything, and hemp hearts are perishable enough that buying larger is not automatically better.

What we liked: Regenerative Organic Certification on a crop where soil practice genuinely matters, Non-GMO verified, and consistently clean soft hulling.

Keep in mind: The highest priced option per ounce, and 12 oz goes quickly with daily use.

What buyers say: Buyers note the texture is softer and fresher than cheaper hemp hearts, and many mention the certification as their reason for choosing it.

Best value: Manitoba Harvest Organic Hemp Hearts, 18 oz

Eighteen ounces is the size that matches how hemp hearts actually get used, which is a couple of tablespoons a day scattered on things, and the price per ounce is meaningfully better than the 12 oz bags. It is USDA organic and non-GMO with the same 10 g protein and 12 g omegas per serving, in a resealable bag. For most households this is the sensible default purchase.

The trade-off is the certification step down from ROC to standard USDA organic, which is a real difference on a bioaccumulator crop even though standard organic is still a solid baseline. Eighteen ounces is also enough that you will want to refrigerate it after opening rather than leaving it in a warm cupboard for two months.

What we liked: The best balance of certification, size, and price here, with a proper resealable bag.

Keep in mind: Standard USDA organic rather than Regenerative Organic, and needs refrigerating once opened.

What buyers say: Buyers treat this as the reliable everyday size and rate the value and consistency.

Best everyday bag: Manitoba Harvest Organic Hemp Hearts, 12 oz

The standard USDA organic 12 oz bag, and the version most widely stocked. If you use hemp hearts a few times a week rather than daily, this is a size you will finish while it is still fresh, which for a perishable seed matters more than the marginal saving on a bigger bag. Same soft clean hulling, same nutrition.

The trade-off is simply economics: the 18 oz bag costs less per ounce for the same product, and the ROC 12 oz offers a higher certification for a modest premium. This sits in the middle without winning on either axis, which is why it scores third rather than being a bad choice.

What we liked: USDA organic, widely available, and a realistic size to finish while fresh.

Keep in mind: Neither the cheapest per ounce nor the highest certified; the 18 oz and the ROC bag each beat it on one axis.

What buyers say: Buyers rate the freshness and mild nutty flavour; several note they upgraded to the larger bag once it became a habit.

Best bulk: Manitoba Harvest Organic Hemp Hearts, 5 lb

Five pounds at by far the lowest price per pound in the guide. If several people in the household use hemp hearts daily, or you are adding them to smoothies, baking, and granola in quantity, this is the only format that makes the habit affordable. Same USDA organic product as the retail bags.

It scores lower because five pounds is poorly matched to a seed this perishable. Hemp hearts are high in polyunsaturated fat and go rancid noticeably, taking on a sharp, bitter, paint-like taste. If you buy this size, decant into several airtight containers on arrival, keep one in the fridge and the rest in the freezer, and do not simply leave a five-pound bag open in a cupboard. Done properly it is excellent value; done carelessly you will throw away half of it.

What we liked: By far the lowest cost per pound for the same certified organic product.

Keep in mind: Five pounds of a perishable seed demands proper decanting and freezer storage.

What buyers say: Bulk buyers rate the value strongly; the recurring advice from reviewers is to freeze most of it immediately.

Best starter size: Manitoba Harvest Organic Hemp Hearts, 7 oz

A small USDA organic bag for anyone who has never eaten hemp hearts. They are mild and pleasant, but the soft slightly oily texture is unfamiliar and a minority of people simply do not enjoy it, which is worth finding out over seven ounces rather than five pounds. It is also a sensible size to keep at a desk or take travelling.

It scores lowest here purely on cost per ounce, which is the highest in the guide with no quality difference at all from the larger bags. Buy it once to find out whether hemp hearts are going to become part of how you eat, then move up to the 18 oz or the ROC bag.

What we liked: Same organic certification and quality in a low-commitment size that stays fresh easily.

Keep in mind: The highest cost per ounce here, with no quality advantage.

What buyers say: First-time buyers appreciate the small bag; nearly all who like them move to a larger size.

How to use hemp hearts, and how to keep them fresh

Hemp hearts need no preparation at all, which is their main practical advantage over chia or flax. You do not grind them, soak them, or cook them. Two to three tablespoons is a standard serving, and the easiest way to build the habit is simply to keep the bag next to whatever you eat in the morning and scatter them over it: porridge, yoghurt, smoothie bowls, or toast with avocado.

Beyond breakfast they are excellent on salads in place of croutons, stirred into soup at the end, blended into smoothies where they add creaminess as well as protein, and pressed into the outside of fish or chicken as a coating. They can replace some of the flour in energy balls and flapjacks. Blended with water and strained they make a decent hemp milk. The flavour is mild and nutty, close to a pine nut, so they do not fight with much.

The one thing not to do is cook them hard. High heat degrades the polyunsaturated fats that are much of the reason to eat them, and toasting turns them bitter quickly because there is no protective hull. Add them at the end of cooking or use them raw.

Storage follows the same logic as every high-polyunsaturate seed: refrigerate after opening, or freeze if you have bought a large bag. They keep around a year unopened in a cool cupboard, and roughly three months refrigerated once open. Fresh hemp hearts smell faintly nutty and taste creamy; rancid ones taste sharp and bitter, and the colour shifts from pale green towards brown. If a bag tastes bitter, it has gone, and no amount of hiding it in a smoothie will help. Introduce them gradually if you are not used to a high-fibre, high-fat seed.

How we researched this guide

We are a research-based review site. We compared each product against its certification level including USDA organic and Regenerative Organic Certification, sourcing and soil practices relevant to hemp’s bioaccumulating properties, hulling quality, colour and freshness, packaging and resealability, price per pound, and the weight of aggregated customer feedback on texture and taste, then scored each with our 10-criteria Organic Integrity Score. No brand paid to be included or ranked. This page is informational and is not medical advice. Read the full method on our How We Research and Rate page.

Common questions about organic hemp hearts

What are the best organic hemp hearts?

Our overall pick is Manitoba Harvest Regenerative Organic Certified Hemp Hearts, because ROC requires USDA organic as a baseline and then audits soil health, animal welfare, and farmworker fairness, which matters for a crop that draws substances from soil readily. For the best value, the 18 oz organic bag, and for bulk, the 5 lb.

Do hemp hearts contain THC?

No meaningful amount. THC and CBD concentrate in the flower and leaf of the plant, not in the seed kernel. Properly hulled hemp hearts have the outer shell removed, and any trace from hull contact is far too low to have any effect. Reports of failed drug tests relate to poorly cleaned whole seed rather than hulled hearts.

Do hemp hearts need to be refrigerated?

After opening, yes. Hemp hearts are high in polyunsaturated fat, which oxidises readily once exposed to air and warmth. They keep around a year unopened in a cool cupboard and roughly three months refrigerated once opened. Freeze large bags. Rancid hemp hearts taste sharp and bitter and turn from pale green towards brown.

Are hemp hearts a complete protein?

Yes. They contain all nine essential amino acids, which puts them among a small group of complete plant proteins, at roughly 10 g per 30 g serving. That is genuinely strong for a plant food, and it is one of the clearest reasons to eat them.

Should you buy hemp hearts organic?

The case is stronger than for most seeds. Hemp is a bioaccumulator, unusually efficient at drawing substances out of soil into its tissue, which is why it is used to remediate contaminated ground. Heavy metals from soil are the specific concern. Organic certification requires documented land history and restricts many contaminated soil amendments, which shifts the odds meaningfully.

Related reading

• Organic Food & Pantry hub
• Best Organic Chia Seeds
• Best Organic Ground Flaxseed
• Best Organic Pumpkin Seeds

Organic Connection is reader-supported. When you buy through links on this page we may earn a commission, at no extra cost to you. As an Amazon Associate we earn from qualifying purchases. We are not paid to feature or rank any product. This page is informational and is not medical advice. How we research and rate.