What Colors Are Used To Mark Queen Bees Based On The Year Number? A Simple Guide To The International Color Code

The international color code for marking queen bees is a five-year rotation based on the last digit of the year. The system uses White for years ending in 1 or 6, Yellow for 2 or 7, Red for 3 or 8, Green for 4 or 9, and Blue for years ending in 5 or 0. This simple system allows a beekeeper to identify a queen's age at a glance.

While the colors themselves are a simple code, their true value lies in enabling quick, critical decisions about a hive's health and productivity. Marking a queen transforms hive inspection from a search-and-rescue mission into a rapid assessment.

What colors are used to mark queen bees based on the year number? A Simple Guide to the International Color Code

Why Marking Your Queen is a Core Beekeeping Practice

A marked queen is the single most important piece of data you can have during a hive inspection. This small dot of color provides immediate information about the hive's most vital member.

Instantly Identify the Queen

Finding an unmarked queen in a bustling colony of 50,000 bees can be a time-consuming and disruptive task. A brightly colored dot on her thorax makes her stand out, reducing the time you need to have the hive open and minimizing disturbance to the colony.

Track the Queen's Age

A queen's egg-laying productivity typically peaks in her first or second year and declines thereafter. Knowing her age allows you to anticipate this decline and plan to replace her (a process called "requeening") before the colony's population and honey production suffer.

Confirm Her Presence

If you see eggs, you know a queen was present in the last three days. However, seeing the marked queen herself provides absolute confirmation that she is alive and well, which is crucial after a period of bad weather or when assessing a hive's recovery from stress. A common mnemonic to remember the color order is Will You Raise Good Bees?

The International Color Code Breakdown

This system is standardized worldwide, ensuring consistency whether you buy a queen from a commercial breeder or raise your own.

White: Years Ending in 1 or 6

For example, a queen hatched in 2021 or 2026 would be marked with white.

Yellow: Years Ending in 2 or 7

A queen from 2022 or 2027 would be marked yellow.

Red: Years Ending in 3 or 8

Queens hatched in 2023 or 2028 are marked with red.

Green: Years Ending in 4 or 9

A queen from 2024 or 2029 would be marked green.

Blue: Years Ending in 5 or 0

Queens hatched in 2025 or 2020 are marked with blue.

How to Get Your Queen Marked

You have two primary options for marking a queen, each with its own advantages depending on your experience level.

Purchase a Pre-Marked Queen

Most queen suppliers offer the service of marking the queen for a small fee before she is shipped. For new beekeepers, this is the safest and most highly recommended option.

Mark the Queen Yourself

Experienced beekeepers often mark queens they raise themselves. This requires gently capturing the queen, often with a specialized marking tube or cage, and applying a small dot of paint to the top of her thorax (the middle section of her body).

Use the Right Materials

It is critical to use non-toxic, water-based acrylic paint pens specifically designed for marking bees. These paints are safe for the queen and dry quickly without harming her.

Understanding the Risks and Considerations

While marking is a standard practice, it is not entirely without risk. It's important to proceed with caution and understanding.

The Risk of Injury

The primary risk is accidentally injuring the queen during the marking process. She is fragile, and excessive pressure can damage her legs, wings, or abdomen. This is why many beginners opt to buy pre-marked queens.

The Potential for Hive Rejection

If too much paint is applied or it gets on other parts of her body, her scent may be altered. In rare cases, this can cause the worker bees to reject and kill her, a process known as supersedure.

When Not to Mark a Queen

If you are not confident in your ability to handle the queen gently, it is better to leave her unmarked. An unmarked but healthy queen is far better than an injured or dead one. Practice on drones (male bees) first to develop your technique.

Making the Right Choice for Your Hive

Your approach to queen marking should align with your experience level and goals for the colony.

If your primary focus is starting your first hive: Order a pre-marked queen from your supplier to eliminate risk and simplify your initial inspections.
If your primary focus is raising your own queens: Master the technique of marking them yourself using the correct color for the year to maintain accurate records.
If your primary focus is managing an established hive with an unmarked queen: You can choose to carefully mark her with the current year's color to establish a baseline for her age going forward.

Ultimately, adopting this simple color-coding system is one of the most effective steps you can take toward becoming a more informed and proactive beekeeper.

Summary Table:

Year Ending In	Queen Marking Color
1 or 6	White
2 or 7	Yellow
3 or 8	Red
4 or 9	Green
5 or 0	Blue

Ready to streamline your beekeeping operations? Properly marked queens are key to efficient hive management and maximizing honey production. HONESTBEE supplies commercial apiaries and beekeeping equipment distributors with the high-quality, non-toxic paint pens and marking tools needed for this essential practice. Let us help you equip your business for success. Contact our wholesale team today to discuss your supply needs!