FECO Oil: What It Is and How It Compares to RSO

• FECO stands for full-extract cannabis oil.
• It’s a thick, dark oil made from the whole cannabis flower.
• FECO and RSO describe very similar products, and many shops use the names interchangeably.
• In Washington, FECO usually comes as capsules or as an oil in a syringe-style applicator.
• Capsules follow Washington’s 10 mg per serving and 100 mg per package caps for adult-use shoppers.

Introduction

FECO oil is a full-spectrum cannabis extract that keeps more of the plant’s natural compounds than a refined oil.

This guide covers how FECO is made, how it compares to RSO, and what Washington law says about it. It’s written for adults 21 and older. Here’s what you need to know.

This product has intoxicating effects and may be habit-forming.

Cannabis can impair concentration, coordination, and judgment. Do not operate a vehicle or machinery under the influence of this drug.

There may be health risks associated with consumption of this product.

For use only by adults 21 and older. Keep out of the reach of children.

Let’s start with the basics.

What is FECO oil?

FECO oil is a concentrated cannabis extract made by soaking whole flower in a solvent, then removing the solvent. The goal is to keep the full range of cannabinoids and terpenes in one oil.

Many vape oils are refined to isolate THC. FECO skips most of that refining. The result is dark, sticky, and pungent.

You’ll also hear people say “FECO weed oil” or just “FECO weed.” They all mean the same product.

New to extracts? Our Cannabis 101 guide covers cannabinoids and terpenes in plain terms.

So how does a shop’s FECO actually get made?

How is FECO made in Washington?

Licensed Washington processors make FECO under state extraction rules. WAC 314-55-104 lists the solvents processors may use. Those include certain hydrocarbons, CO2, and food-grade ethanol.

Ethanol is common for full extract oils. The rule requires processors to remove the ethanol from the finished extract. It also requires them to recapture it instead of venting it.

After extraction, the oil is heated. That step converts THCA into THC, which is why FECO is sold as an intoxicating product. Then it’s tested and packaged like any other licensed concentrate.

Recipes vary by brand. Fairwinds, a Washington brand on our Brand List, says its FECO blends an oil extract with a separate juice extract. That’s the brand’s own description, so ask a budtender which version is on the shelf.

That brings up the question everyone asks next.

FECO vs RSO: what’s the difference?

FECO vs RSO is mostly a naming question. Both are full-plant cannabis oils with a dark, tar-like texture. Many people use the two terms for the same thing.

RSO stands for Rick Simpson Oil, named after the person who popularized the recipe. FECO is the broader, generic term. In a licensed Washington shop, both are made with state-approved solvents and lab-tested.

Here’s how the labels tend to line up.

Feature	FECO	RSO
What the name means	Full-extract cannabis oil	Named after the person who popularized it
Starting material	Whole cannabis flower	Whole cannabis flower
Texture	Thick, dark oil	Thick, dark oil
Solvents in Washington	Only those allowed by WAC 314-55-104	Only those allowed by WAC 314-55-104
Common formats	Capsules, syringe-style applicators	Syringe-style applicators
Lab testing	Required for licensed products	Required for licensed products

The bottom line on FECO vs RSO is simple. The label tells you what you’re buying.

Next, let’s look at how FECO shows up on a shelf.

What formats does FECO come in?

FECO usually comes in two formats in Washington: capsules and oil in a syringe-style applicator. Some brands also sell ratio blends that mix CBD and THC.

Capsules

Capsules hold a measured amount of FECO in a pill. They count as a product meant to be swallowed. That means the label shows THC per capsule and per package.

Applicators and syringes

Applicator FECO is a thick oil in a plunger tube. It’s usually labeled as a concentrate. The label lists total THC and CBD for the whole tube.

Ratio blends

Fairwinds lists FECO products in 1:10, 1:1, and 10:1 CBD-to-THC ratios. Ratios describe what’s in the product. Experiences vary from person to person.

Formats matter because Washington rules handle them differently.

How do Washington rules apply to FECO?

Washington rules depend on the format. Swallowed FECO products follow edible limits. Applicator FECO usually follows concentrate limits.

WAC 314-55-095 caps swallowed products at 10 mg of delta-9 THC per serving. A single package can’t exceed 100 mg. Capsules fall under those caps for adult-use shoppers.

Concentrates follow purchase amounts instead. Adults 21 and older can buy up to 7 grams of concentrate at one time.

Timing differs by format too. The Liquor and Cannabis Board’s onset and duration guide lists capsules with edibles. It gives a slower onset of 1 to 4 hours and a longer duration. Use those numbers as general guidelines.

Knowing the rules makes the counter conversation easier.

What should you ask a budtender about FECO?

Ask about format, ratio, and the lab results on the label. Those three answers tell you most of what you need.

Good questions to bring:

1. Is this FECO a capsule or an applicator?
2. What’s the THC and CBD ratio on the label?
3. Where do I find the lab testing information?

Our budtenders answer these questions every day and can help you read the label.

Expert Insight: Read the format before the name

Shoppers often ask for “RSO” when the shelf tag says FECO, or the other way around. In a licensed Washington shop, the bigger difference is format. A capsule and an applicator follow different labeling rules and different purchase limits. Start your question with the format you want, then compare labels within it.

Ready to see it in person?

Where can I buy FECO oil near Kingston?

FECO oil has appeared on the menu at High Point Cannabis, 30521 Hansville Rd NE in Kingston. We’re next to The Point Casino and Hotel, and we’re open 8 a.m. to midnight, seven days a week.

Inventory changes often, so check the live menu for current FECO products. You can also browse tinctures and edibles if you’d rather compare other ingestible formats.

Get directions on our Contact page. New to dispensaries? Read our guide to choosing a dispensary in Washington.

Frequently Asked Questions

What is FECO?

FECO means full-extract cannabis oil. It’s a thick, dark extract made from whole cannabis flower, then heated so THCA converts to THC. Licensed Washington versions are made with state-approved solvents and lab-tested. High Point budtenders can show you the FECO labels on our current menu.

Is FECO the same as RSO?

FECO and RSO describe nearly identical full-plant oils, and many shops use the names interchangeably. RSO refers to a specific recipe popularized by one person. FECO is the generic term. In Washington, both must meet the same extraction and testing rules, so compare labels instead.

How is FECO oil sold in Washington?

FECO oil in Washington usually comes as capsules or as oil in a syringe-style applicator. Capsules follow the 10 mg serving and 100 mg package caps for swallowed products. Applicators are usually sold as concentrates. Ask a High Point budtender which format fits what you’re looking for.

How long does FECO take to kick in?

FECO capsules fall under the slower ingestion category in the Liquor and Cannabis Board’s guidelines. The board lists an onset of 1 to 4 hours for edibles and capsules. Experiences vary from person to person. A High Point budtender can explain what the label on each product means.

Where can I buy FECO oil in Kingston?

High Point Cannabis is at 30521 Hansville Rd NE in Kingston, next to The Point Casino and Hotel. FECO stock changes often, so check our live menu before you visit. We’re open 8 a.m. to midnight every day, and our budtenders can help you compare options.

The Bottom Line

FECO oil is a full-plant cannabis extract, and RSO is a close cousin with a different name. Format and label matter more than the nickname.

FECO is for adults 21 and older only.

High Point Cannabis, 30521 Hansville Rd NE, Kingston, WA 98346.

Concerned about your cannabis use? The Washington Recovery Help Line is free, confidential, and open 24/7 at 1-866-789-1511 or warecoveryhelpline.org.

Want to compare FECO capsules and applicators side by side? Check the live menu for today’s options, then stop by and ask a budtender to walk you through the labels. Reach Your Peak with High Point.