When Do Bearded Dragons Stop Growing

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Bearded dragons are fascinating reptiles that have gained popularity as pets in recent years. These lizards are known for their docile nature, unique appearance, and relatively low maintenance requirements. If you are considering getting a bearded dragon as a pet, it is important to understand their growth patterns and know when they will stop growing. In this article, we will explore the factors that influence the growth of bearded dragons and provide you with a clear understanding of when these remarkable creatures reach their full size.

Factors Affecting Growth

Before we delve into when bearded dragons stop growing, it is essential to understand the various factors that influence their growth. Some of these factors include genetics, nutrition, temperature, and overall health.


Just like humans, bearded dragons inherit certain traits from their parents. This includes their growth rate and ultimate size. Some individuals may have genes that make them naturally larger or smaller than others. It is important to note that while genetics play a role, they are not the sole determining factor in a bearded dragon's growth.


Proper nutrition is crucial for the healthy development of bearded dragons. These reptiles require a balanced diet that consists of a variety of insects, vegetables, and fruits. The calcium and protein content in their diet is particularly important for their growth. A lack of essential nutrients can lead to stunted growth or other health issues.


Bearded dragons are ectothermic animals, meaning their body temperature is regulated by their environment. To support optimal growth, it is important to provide them with a suitable temperature gradient within their enclosure. This allows them to thermoregulate and digest their food properly. Inadequate temperatures can impact their growth and overall health.

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Overall Health

The overall health of a bearded dragon can also affect its growth rate. Factors such as parasitic infections, respiratory issues, or metabolic bone disease can hinder their growth and development. Regular veterinary check-ups and proper husbandry practices are essential to ensure a healthy and growing bearded dragon.

Growth Phases

Bearded dragons go through different growth phases as they develop from hatchlings into adults. Understanding these phases will give you an insight into when they stop growing.

Hatchling Phase

The hatchling phase is the first stage of a bearded dragon's life. They are typically around 4-6 inches long at birth and grow rapidly during this period. During the hatchling phase, bearded dragons can gain as much as an inch in length per week. Their growth rate is influenced by the factors mentioned earlier, such as genetics, nutrition, temperature, and health.

Juvenile Phase

The juvenile phase begins when the bearded dragon reaches around 3-4 months of age. At this stage, their growth rate starts to slow down compared to the hatchling phase. They will continue to grow but at a reduced rate. Generally, bearded dragons will experience more growth during the warmer months and slower growth during the colder months. This is because their metabolism is influenced by temperature and they require more energy to grow in warmer conditions.

Sub-Adult Phase

The sub-adult phase starts when the bearded dragon is around 7-10 months old. During this phase, their growth rate further slows down. Many bearded dragons will experience a growth spurt during this time, but it is not as significant as during the hatchling or juvenile phases. This is the stage where bearded dragons start to develop their adult coloration and patterns. It is worth noting that the growth rate can vary between individuals, and some may reach the adult stage quicker than others.

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Adult Phase

The adult phase is when bearded dragons reach their full size and stop growing. The age at which bearded dragons reach adulthood depends on various factors, including their genetics and overall health. On average, bearded dragons reach their adult size between 12 to 18 months of age. Adult males tend to be larger than females, with males averaging around 18-22 inches in length, while females average around 16-20 inches.


Bearded dragons are captivating reptiles that undergo significant growth during their early stages of life. Understanding the factors that influence their growth, such as genetics, nutrition, temperature, and overall health, is crucial for providing them with the best care. While individual growth rates may vary, bearded dragons generally reach their full size and stop growing between 12 to 18 months of age. By ensuring proper nutrition, temperature, and overall health, you can help your bearded dragon reach its maximum growth potential and enjoy a long and healthy life as your beloved pet.

*Note: This article is for informational purposes only and should not replace professional veterinary advice. If you have concerns about your bearded dragon's growth or health, consult with a qualified reptile veterinarian.*


When do bearded dragons stop growing?

Bearded dragons typically stop growing between 12 to 18 months of age. However, some individuals may continue to show slight growth beyond this timeframe.

1. How can I determine if my bearded dragon has stopped growing?
To determine if your bearded dragon has stopped growing, you can monitor its weight and length. Once these measurements remain consistent for a few months, it indicates that your dragon has reached its adult size.

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2. What is the average size of an adult bearded dragon?
Adult bearded dragons can reach an average length of 18 to 24 inches, from the tip of their snout to the end of their tail. However, some individuals may grow slightly larger or smaller.

3. Is there any way to promote faster growth in my bearded dragon?
While you cannot significantly accelerate the growth rate of your bearded dragon, you can ensure proper growth by providing a suitable habitat with appropriate temperature, lighting, and nutrition. Regular veterinary check-ups are also recommended.

4. Can bearded dragons grow too big for their enclosure?
Yes, bearded dragons can outgrow their enclosure if it is not sufficiently spacious. It is important to provide a habitat that allows for their growth and accommodates their adult size comfortably.

5. Can a bearded dragon's growth be stunted?
Yes, a bearded dragon's growth can be stunted due to various factors such as inadequate nutrition, improper lighting and temperature, stress, or underlying health issues. Ensuring a proper environment and diet is essential to prevent stunted growth in these reptiles.

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