We purchased and tested the FlowerPot B2 hands-on. Prices, availability, and performance data are regularly verified.
VapeExperts Review of the FlowerPot B2
The FlowerPot B2 from Cannabis Hardware is the hardest-hitting desktop vaporizer we've tested. Using 4mm ruby balls and full convection heating, it extracts a 0.5 g bowl of cannabis in 1-2 lung-filling pulls through your glass rig, with vapor intensity closer to a dab than a typical vaporizer session.
What sets the B2 apart in our ball vaporizer rankings is its dual-use design. A SiC or sapphire concentrate dish sits atop the ruby-filled head, letting you vaporize herb and concentrates at the same time. Cannabis Hardware calls this a "double decker," and no other ball vape replicates it.
Full transparency: Cannabis Hardware has discontinued the B2 head. Ruby balls reduced optimal flower temperatures so far below concentrate needs that the dual-purpose design became impractical. Cannabis Hardware now directs buyers toward the FlowerPot B19.0 for dedicated flower use, and the Airstream for users who want multi-purpose flexibility. If you find a B2 in remaining stock or on the secondhand market, here's what our testing revealed.
What's in the box
The B2 Standard Essentials Bundle ships with everything except glass:
B2 Vaporizer Head Assembly with SiC or Sapphire dish
4mm ruby balls
Universal carb cap with Ed's Cocobolo handle
Shovelhead Bowl Assembly with titanium screen
18mm connection post (14mm also available)
CH PID or Auber RDK temperature controller
20mm e-nail coil
You supply the water pipe. The B2 fits both 14mm and 18mm female glass joints, covering most standard rigs.
Grade 2 titanium built to outlast your collection
The B2 head assembly is machined from Grade 2 titanium in Florida. At 680 g for the head alone, it carries the heft of a precision tool. The Shovelhead Bowl, screen, and connection posts are titanium as well, with a vapor path running through stainless steel and glass.
Inside the head sit roughly 100 ruby balls. These 4mm spheres store thermal energy and create a turbulent mesh of heated surfaces that air passes through on every draw. The top holds the concentrate dish with seven holes channeling vapor down through the balls and into your herb.
Whether you own the FlowerPot B2 or are still deciding — your thoughts and questions are welcome here.
Reviewed by
The VapeExperts Editorial Team
Every vaporizer we cover is bought, lived with, and tested by the same small team. We log temperatures with an external thermocouple, run battery cycles to depletion, and spend at least two weeks on a device before we score it. No manufacturer has ever paid for, previewed, or influenced a review on this site.
Everything is modular. You can swap bowl types (Shovelhead or glass injector), ball sizes (3mm or 4mm), and ball materials (ruby, quartz, or SiC). If the PID controller dies, any standard 20mm e-nail controller works as a drop-in replacement. There are no fragile ceramic plates, no delicate coil wires, and no plastic anywhere in the heat path.
Ruby ball convection crushes a full bowl in one hit
The PID controller drives current through a 20mm e-nail coil wrapped around the titanium head. That coil heats the housing, which heats the ruby balls, which heat the air you inhale. The result is concentrated convection power with adjustable airflow that varies based on ball size and configuration.
Heat-up takes 180 seconds for a full soak. The coil reaches target temperature faster, but the ruby balls need time to absorb and distribute heat evenly throughout the chamber. Skipping the soak produces wispy, disappointing results. The patience is non-negotiable.
Most users run the B2 between 260°C and 290°C for dry herb. At these temperatures, terpenes arrive in a concentrated burst rather than tapering across a 5-minute session. The experience is closer to dabbing than a traditional vaporizer session, and our temperature guide helps dial in the ideal range.
With the Shovelhead Bowl, the B2 operates as a hybrid. The titanium head transfers conduction heat into the bowl below, pre-warming herb before you draw. This conductive assist makes extraction faster and more complete than the glass injector alternative, which delivers purer convection flavor at a slower pace. Our convection vs conduction guide explains the trade-offs.
The "double decker" is the B2's signature capability. Load herb in the Shovelhead Bowl, drop a dab on the SiC dish, cap it, and inhale. The concentrate vaporizes on the dish, flows through the ruby balls, and merges with the herb vapor below. Both flavors arrive simultaneously.
Cannabis Hardware acknowledges the limitation that led to discontinuation: ruby balls work best for flower at 260-290°C, but concentrates demand higher heat. Bridging that gap means compromising one material to serve the other.
Plug-in power means no battery limits
The B2 runs on wall power through its PID controller. No battery, no charging, no session timer cutting you off. Set your temperature, wait 180 seconds, and it holds heat indefinitely.
Many owners leave the PID running through an entire evening, returning for hits whenever they want. The B2 functions as a true on-demand vaporizer: heat stays available, and you extract only when you draw. The PID provides 1°C step precision up to 538°C.
Loading takes practice and safety demands respect
The learning curve is the B2's weakest area in our testing, trailing every other category we measured.
Loading the Shovelhead Bowl means grinding fine, dropping in 0.1-0.25 g of cannabis, and placing the heated head on top. Too much material and the center over-extracts while edges stay green. Too little wastes the B2's capacity. A loose pack with a fine grind consistently produces the best results.
The B2's coil is enclosed in the titanium head (unlike the entry-level B0's fully exposed coil), but the entire assembly still runs above 260°C during use. The safety stand is not optional. It prevents a superheated titanium assembly from contacting your desk, carpet, or skin.
Cleaning is straightforward but not fast. Ruby balls need periodic isopropyl alcohol soaks. The Shovelhead Bowl and screen require regular brushing. The SiC dish wipes clean after concentrate use. Everything disassembles for deep maintenance, but reassembly takes time. Running concentrates through the B2 adds residue inside the ruby-filled head, compounding the workload. Our vaporizer cleaning guide covers the full process.
How the FlowerPot B2 compares
FlowerPot B2 vs FlowerPot B1
The B1 is the B2's flower-only sibling and Cannabis Hardware's current recommendation for herb users. Removing the concentrate dish and using an open mesh top gives it freer airflow and more consistent extraction.
In our testing, the B1 draws more openly and delivers slightly more even results. The B2's seven-hole design creates more backpressure, which some users prefer because it guides draw speed. For herb-only use, the B1 is the stronger buy at a lower price point. The B2 wins only if you specifically want the double-decker experience.
FlowerPot B2 vs Volcano Hybrid
The Volcano Hybrid9.4 represents the opposite end of desktop vaping. Where the B2 delivers everything in 1-2 massive pulls, the Volcano fills a balloon bag with vapor for relaxed, shareable sessions.
Vapor quality differs in character rather than caliber. The B2 hits harder and extracts faster. The Volcano produces smoother, cooler vapor across longer sessions. For medical users who need precise dosing or pass-the-bag group sessions, the Volcano is more practical. For solo users chasing the most intense extraction in our desktop vaporizer rankings, the B2 stands alone.
FlowerPot B2 vs Taroma 360
The FlowerPot B1 is Cannabis Hardware's current-production successor, a dedicated flower ball vape using ruby balls in an all-glass pathway that achieves full extraction at lower operating temperatures.
Community consensus suggests comparable herb-only performance at less cost. The B2's advantages are concentrate support and the Shovelhead Bowl's conductive assist. If concentrates aren't part of your routine, the Taroma delivers similar extraction intensity for a smaller investment.
Who should buy the FlowerPot B2
Heavy hitters who want full extraction in one breath. The B2 pulls more cannabinoids from a single bowl than most desktops extract across an entire session.
Ex-smokers who miss the bong ritual. Paired with a glass rig, the B2 is the closest vapor gets to a combustion hit, without the combustion byproducts. Multiple community members describe it as "like a dab, but from flower."
Dual-use enthusiasts who want herb and concentrates in one hit. Despite the temperature compromise, the double decker remains an experience no other desktop replicates.
Final verdict on the FlowerPot B2
The FlowerPot B2 delivers the most intense dry herb extraction in our desktop testing, and its dual-use design remains one of a kind among ball vapes. The discontinuation is warranted (the flower-concentrate temperature gap is real), but the performance speaks for itself. VapeExperts recommends the B1 as the practical entry point for flower-focused buyers, but anyone who finds a B2 and wants the full double-decker experience is getting a genuinely top-tier machine.
