THCa Rosin, Risen from Water

Small-batch solventless rosin and THCa flower shipped direct, farm bill compliant.

Why Rosslyn?

- Solventless Only

No hydrocarbons, ever. Just ice, water, heat, and pressure

- Lab Tested

COAs available for every batch we drop

- Farm Bill Compliant

Hemp-derived THCa under 0.3% Δ9 THC by dry weight

- Fast, Discreet Shipping

Plain packaging, quick fulfillment from our facility

Understand our tiers/Washes

Select Wash (Mixed Microns)
Great value jars for everyday sessions. Clean, flavorful washes that keep things affordable without feeling cheap.

Craft Wash (70-140u)
Stronger nose and better bags. For people who care about terp profile and want more character in each dab.

Reserve Wash (90-120u)
Top tier washes from our best material. Loud terps, refined effects, and the jars we reach for when we really want to enjoy the session.

Ultra Reserve (90u or 70u)
Tiny batches from stand out material. Limited drops only, small runs, and usually gone fast.

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Represent Rosslyn

Gear Up

Rosslyn Direct is built on one simple idea

If we treat the plant with respect, it gives us everything we need

We work with clean growers, wash in small batches, and only press solventless. No cut carts, no mystery blends, no mass-market shortcuts. Just THCa rosin and flower that feel as good as they taste

Is THCa Legal?

At the federal level, THCa products are legal when they are hemp-derived and stay under 0.3% Δ9 THC by dry weight

That’s exactly how we build Rosslyn Direct. Every batch starts with compliant material and is tested so you can see the numbers yourself. Always check your local laws, but we design our lineup to stay on the right side of the Farm Bill

You have questions? We have answers

Orders before 2 PM EST ship same day (Mon–Fri)

Priority: 1–3 business days

Ground: 3–5 business days
You’ll get tracking info once your order ships.

WE NOT GURANTEE ANY SHIPPING TIMES AS WE CAN NOT CONTROL THAT.

We will work quickly to ship your order as soon as possible. Once your order has shipped, you will receive an email with further information. Delivery times vary depending on your location. We work to get orders that are placed before 2pm EST out same day, and recieved after they will go out next day.

Yes! We offer wholessale to retailers, but please reach out by email to hello@rosslyn.direct

We ship to most U.S. states that allow hemp-derived THCA. We do not ship to Arkansas, Idaho, Minnesota, or Hawaii. Orders from restricted states will be canceled and refunded.

THCA is the raw, non-psychoactive form of THC found in cannabis. When heated (like in a dab rig or vape), it converts to THC and becomes active. Our rosin is high in THCA and remains non-psychoactive until activated by heat.

We produce small-batch, solventless THCA rosin and vapes—no solvents, no shortcuts. Our products are shipped cold and always third-party tested for purity and compliance. Unlike otherbrands such as Crisp, Simply Mary, Arete, Hello Mary we only sell solventless products.