Delta-8 vs Delta-9 vs THCa — What's the Difference?

Delta-8, Delta-9, THCa — they're all technically forms of THC, but they hit your body in very different ways. If you've seen all three on dispensary shelves and wondered what the difference is, here's a straight breakdown with no filler.

Delta-9 THC

Potency: Full strength

High: Euphoric, relaxing, appetite-stimulating

Source: Cannabis flower

Legal in OR: Yes (rec + med)

Flower Edibles Concentrates Vapes

Delta-8 THC

Potency: ~50–66% of Delta-9

High: Milder, clear-headed, shorter-lasting

Source: Synthesized from hemp CBD

Legal in OR: Gray area

Gummies Vapes Tinctures

THCa

Potency: Zero (until heated)

High: None raw — converts to Delta-9 when smoked/vaped

Source: Raw cannabis flower

Legal in OR: Yes

Raw flower Juicing Topicals

Delta-9 THC The Standard

The Compound Behind the Cannabis Experience

Delta-9 THC is what most people mean when they say "THC." It binds directly to CB1 receptors in your brain, producing the classic effects: euphoria, relaxation, appetite stimulation, enhanced sensory perception, and pain relief. It's the most abundant psychoactive cannabinoid in cannabis and the most extensively studied.

Every flower strain on our shelf — from Eugreen's gas-forward hybrids to Fenario's Cap Junky — delivers its effects primarily through Delta-9. Same goes for our edibles, concentrates, and vape cartridges. When you buy cannabis at a licensed Oregon dispensary, Delta-9 is what you're getting.

Delta-8 THC The Mild Alternative

Lighter Effects, Different Source

Delta-8 THC is an isomer of Delta-9 — the molecular structure is nearly identical, with one double bond shifted by a single position. That small change cuts the potency roughly in half. Users describe the experience as more clear-headed and less anxious than Delta-9, which appeals to some consumers who find full-strength THC too intense.

The catch: Delta-8 doesn't occur naturally in meaningful amounts. Most Delta-8 products are chemically synthesized from hemp-derived CBD, which puts them in a legal and regulatory gray area. Oregon's licensed dispensary market focuses on naturally produced Delta-9 cannabis. You're unlikely to find Delta-8 at a licensed shop — it's more common in gas stations and head shops where quality control and testing standards are inconsistent.

THCa The Raw Precursor

It Becomes Delta-9 When You Light It

THCa is the acidic precursor to Delta-9 THC. It exists naturally in raw cannabis flower — every nug on our shelf is technically high in THCa, not Delta-9, until heat is applied. The process of converting THCa to Delta-9 is called decarboxylation, and it happens automatically when you smoke, vape, or bake with cannabis.

In its raw form, THCa is non-intoxicating. Some consumers juice raw cannabis or use THCa tinctures for potential anti-inflammatory and neuroprotective benefits, though research is still limited. When you see a strain testing at "30% THCa" on a dispensary label, that's telling you how much Delta-9 the flower will produce once heated.

At Green Health What We Carry

Which One Should You Buy?

As a licensed Oregon dispensary, everything on our shelf is Delta-9 THC cannabis — tested, labeled, and sourced from Oregon growers. We don't carry Delta-8 products because the unregulated manufacturing process doesn't meet our quality standards.

If you're concerned about THC being too strong, talk to your budtender. We can point you toward lower-THC strains, CBD-balanced products, or micro-dose edibles that give you control over intensity without resorting to synthesized alternatives.

New to cannabis? Start with a 25mg Magic Number soda or a single pre-roll and work up from there. Our staff has been doing this since 2014 — they'll find the right fit for you.

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Green Health Eugene

607 Highway 99 N, Eugene, OR 97402
Open daily 9 AM – 9 PM
Visa & Mastercard accepted — no fees

Visit our dispensary · Get directions · Today's deals

5 Ways to Save on Cannabis Without Sacrificing Quality

Cannabis doesn't have to be expensive. Whether you're a daily consumer or someone who picks up once a month, a few simple habits can cut your spending without downgrading what you're putting in the jar. Here are five strategies that work at any dispensary in Oregon — and a few that work even better at Green Health Eugene.

Tip #1 Save 15–20%

Stack Daily Deals With Your Regular Shopping

Most dispensaries run daily specials, but the savings only matter if the deal lines up with what you actually buy. At Green Health Eugene, we structured our deal schedule around the categories customers shop most.

Mon — 2× Pts + Wheel Tue & Sat — 15% Extracts Wed — 15% Edibles & Topicals Thu — 20% Off Ounces Fri — Bulk Flower Sun — 15% Topicals + 2× Pts

If you already buy concentrates regularly, shifting your visit to Tuesday or Saturday saves 15% every time with zero effort. Same product, same quality — just better timing.

See full deal schedule

Tip #2 Free to Join

Join a Loyalty Program and Actually Use It

Most dispensary loyalty programs are free. Ours is no exception — sign up at the register or online and you start earning points immediately. Points convert to real discounts on future visits.

The trick most people miss: combine loyalty points with daily deals. Buy concentrates on a Tuesday, earn points on the purchase, then redeem those points on a Thursday ounce. You're double-dipping on savings.

Sign up or log in

Tip #3 Best $/Gram

Buy Ounces Instead of Eighths

The per-gram price drops significantly when you buy in larger quantities. An eighth might run you $8–12 per gram depending on the tier. A full ounce of the same flower can bring that down to $4–6 per gram.

Green Health Eugene runs everyday ounce pricing starting at $55, with rotating loyalty-only ounce specials announced via text. If you go through flower consistently, buying by the ounce is the single biggest money saver available.

Browse live flower menu

Tip #4 Hidden Gems

Explore Value Tiers — They're Better Than You Think

Oregon's cannabis market is mature enough that "budget" flower isn't what it used to be. Farms that were top-shelf five years ago now have competition from newer growers pushing quality at lower price points.

At Green Health, we stock value-tier flower from farms like Bonsai, Thunder Farms, and rotating outdoor options alongside premium drops from Eugreen, Focus North, and Fenario. Ask your budtender what's hitting above its price point this week — they smoke what we sell and they'll tell you straight.

Tip #5 More Per Dollar

Switch Methods to Stretch Your Dollar

If you're only smoking flower, you might be leaving money on the table. Edibles last longer per dose — a $15 pack of gummies can cover multiple sessions. Concentrates deliver more potency per gram than flower, meaning less product used per session.

Even within flower, switching from pre-rolls to buying loose and rolling your own saves roughly 30–40% per gram. Pre-rolls are convenient, but you pay for that convenience.

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Green Health Eugene

607 Highway 99 N, Eugene, OR 97402
Open daily 9 AM – 9 PM
Visa & Mastercard accepted — no fees

Visit our dispensary · Get directions · Today's deals

Extracts & Concentrates: Methods and Results

Different Types of Extracts & Concentrates

Every concentrate on our shelf started as raw cannabis flower. The difference between a $10 gram of shatter and a $40 gram of live rosin comes down to how the trichomes were separated from the plant. Here's how the two main extraction methods work, what they produce, and why it matters when you're shopping.

The Basics Start Here

Two Methods, Dozens of Products

Cannabis extraction breaks into two camps: solvent-based (a chemical dissolves the trichomes off the plant) and solventless (mechanical separation using ice water, heat, or pressure — no chemicals). Both produce potent, flavorful concentrates, but the process changes the texture, flavor, and price.

You'll sometimes hear "extracts" used for solvent-based products and "concentrates" used for solventless. In practice, most people use the terms interchangeably. What matters is knowing which method made the product in your hand.

— SOLVENT vs SOLVENTLESS —

Solvent-Based Chemical

How It Works

A chemical solvent — usually butane (BHO), supercritical CO2, or ethanol — is passed through cannabis material to dissolve trichomes and cannabinoids. The solvent is then purged off, leaving behind concentrated oil.

Common products:

Shatter Wax Budder Crumble Live Resin Distillate

Solvent-based extraction is efficient and scalable, which is why shatter and live resin tend to be more affordable than solventless options. Covert Extraction shatter starts at $8.33/g at Green Health Eugene.

Solventless No Chemicals

How It Works

Solventless extraction uses only ice water, heat, and pressure — no chemicals touch the plant. Ice water agitation separates trichome heads to make bubble hash. Heat and pressure squeezes that hash (or raw flower) through a rosin press to produce rosin.

Common products:

Kief Bubble Hash Dry Sift Live Rosin Cold Cure Badder Temple Balls

Solventless tends to be pricier because yields are lower and the process is more labor-intensive. Many consumers prefer the cleaner flavor profile and the fact that no chemical residue is possible. We carry solventless from Bonsai Farms, White Taffi, Sub Zero, and Dirty Arm Farm.

Spectrum Types Know the Difference

Isolate vs Broad Spectrum vs Full Spectrum

Regardless of extraction method, the final product falls into one of three categories based on what cannabinoids and terpenes survive the process:

Isolate — a single cannabinoid (usually THC or CBD) refined to 90%+ purity. Everything else is stripped out. Clean and potent, but you lose the entourage effect.

Broad Spectrum — retains multiple cannabinoids and terpenes but has THC removed. Common in CBD products.

Full Spectrum — all cannabinoids, terpenes, and THC intact. This is what most recreational concentrates are. Live resin and live rosin are both full-spectrum products, which is why they tend to deliver a more well-rounded effect than distillate.

At the Counter Shop Smart

What to Ask Your Budtender

If you're new to concentrates, here's how to narrow it down fast:

On a budget? Start with Covert Extraction shatter or Higher Cultures badder. Solvent-based, affordable, and consistent. Dabs from $10/g.

Want the cleanest flavor? Go solventless — Bonsai cold-cure badder or White Taffi live rosin. You'll pay more, but the terpene expression is noticeably different.

Need something portable? Vape cartridges and disposables use distillate or live resin oil in a ready-to-go format. No rig, no torch, no mess.

All extracts, cartridges, and vapes are 15% off every Tuesday and Saturday at Green Health Eugene.

Browse our full concentrates menu

Green Health Eugene

607 Highway 99 N, Eugene, OR 97402
Open daily 9 AM – 9 PM
Visa & Mastercard accepted — no fees

Shop concentrates · Visit our dispensary · Today's deals

(Rosin Being Extracted From Bubble Hash)