# RB003

Species: Capsicum chinense.

RB003 is a Capsicum chinense cultivar from Queensland, Australia. Capsi’s sourced range is 1,000,000–2,200,000 SHU (Vendor Claim). Used for hot sauces, powders, fermentation. Heat is a range, not a single marketing number.
About 64 times a Capsi Jalapeño (25,086 SHU typical).

## Heat sources

- 1,000,000 SHU · Vendor Claim
  RB 003 Pepper Seeds
  https://www.tyler-farms.com/rb-003-pepper-seeds/

- 2,000,000 SHU · Vendor Claim
  RB003 Pepper Seeds — Experimental Super Hot
  https://atomicpepperseeds.com/products/rb003-10-isolated-seeds

- 1,000,000–2,000,000 SHU · Vendor Claim
  RB003 Pepper | Superhot Reaper x Brainstrain Cross
  https://tomatoseeds.eu/rb003/

- 1,800,000–2,200,000 SHU · Vendor Claim
  RB003 Pepper Seeds
  https://pepperguru.com/product/rb003-pepper-seeds/

## Heritage

We don't have a documented family for this pepper yet.

## Page sources

- [Comprehensive overview of RB003 history, genetics, flavor profile, heat estimates, and appearance.](https://www.harmonypeppers.com/post/rb003-pepper)
- [Product description highlighting breeding, appearance, ripening, and culinary uses.](https://spicequestlabs.com/products/limited-edition-rb003-2025-harvest)
- [Seed vendor page with breeder info and flavor notes.](https://texashotpeppers.net/products/rb003)
- [Seed catalog noting heat level and grower details.](https://atomicpepperseeds.com/products/rb003-10-isolated-seeds)
- [Seed vendor page with heat estimates (1.8–2.2M+ SHU), flavor notes, pod morphology, and growing tips.](https://pepperguru.com/product/rb003-pepper-seeds/)

## FAQ
### How hot is RB003?

Capsi’s sourced range is 1,000,000–2,200,000 SHU (Vendor Claim). Capsi uses a sourced range and a trust tier, not a single marketing number. How we verify heat: https://web.thecapsi.app/learn/heat-and-capsaicin/how-we-measure-heat

### What does RB003 taste like?

Bright citrus up front, floral mid-notes, clean finish with no bitterness.

### How do I grow RB003?

RB003: about 100 days to maturity, subtropical climate, full sun, hardiness zones 9-11.

### What can I substitute for RB003?

Capsi does not have that recorded yet.

Page: https://web.thecapsi.app/pepper/rb003
Catalog: https://web.thecapsi.app/data