Updated: July 14, 2023

Introduction

Thuja plants, also known as arborvitaes, are popular evergreen shrubs that are commonly used as hedges or privacy screens in gardens. Like any other plant, they require proper care and attention to thrive. One of the most important aspects of caring for thuja plants is watering them adequately. However, it can be challenging to determine when exactly a thuja plant needs watering. In this article, we will discuss some effective methods to identify if your thuja plant is in need of hydration.

Observing the Soil Moisture

The first and most straightforward method to determine if your thuja plant needs watering is by observing the soil moisture. Thuja plants prefer moist soil, but they also require good drainage to prevent root rot. Insert your finger about an inch into the soil near the base of the plant. If the soil feels dry at that depth, it’s a clear sign that your thuja plant needs watering. However, if the soil feels damp or wet, it is an indication that the plant has sufficient moisture and does not require watering at that moment.

Checking the Color and Texture of Leaves

Another way to assess the water needs of your thuja plant is by examining the color and texture of its leaves. When a thuja plant lacks water, its leaves may start turning brown or yellow. Additionally, they may become dry and brittle to touch. On the other hand, well-hydrated thuja plants have vibrant green leaves that are firm and supple. By regularly inspecting your thuja’s foliage, you can quickly identify any signs of dehydration and provide it with water promptly.

Monitoring Growth Rate

A healthy thuja plant should exhibit steady growth throughout the growing season. However, inadequate watering can stunt its growth and lead to a lackluster appearance. By monitoring the growth rate of your thuja plant, you can assess whether it is receiving sufficient water or not. If you notice that the plant’s growth has slowed down significantly, it might be an indication that it needs watering. Conversely, if your thuja is growing vigorously and appears lush, it is likely well-watered and happy.

Testing Soil Moisture with a Moisture Meter

If you prefer a more precise way of assessing the moisture level of your thuja plant’s soil, you can invest in a moisture meter. These handy devices measure the moisture content of the soil and provide accurate readings. To use a moisture meter, insert the probe into the soil near the root zone of the thuja plant. The meter will display the moisture level, indicating whether it is dry, moist, or wet. This method eliminates any guesswork and allows you to water your thuja plant precisely when necessary.

Considering Environmental Factors

In addition to visual cues and testing soil moisture, it’s crucial to consider environmental factors that can influence the water requirements of your thuja plant. During periods of high heat or dry weather conditions, the soil tends to dry out faster, necessitating more frequent watering. Similarly, if your thuja plant is exposed to strong winds or located in an area with poor drainage, it may require more watering compared to a plant in a sheltered spot. By taking these factors into account, you can adjust your watering schedule accordingly.

Using Mulch to Retain Moisture

To ensure that your thuja plant retains moisture for longer periods, consider using mulch around its base. Mulch acts as a protective layer over the soil, preventing evaporation and conserving water. It also helps regulate soil temperature and suppresses weed growth. Apply a layer of organic mulch around your thuja plant, making sure not to pile it against the trunk. The mulch will not only keep the soil moist but also enhance the overall health and appearance of your thuja.

Maintaining a Consistent Watering Schedule

Establishing a consistent watering schedule is essential for the well-being of your thuja plant. In general, thuja plants should be watered deeply once a week during the growing season. However, this may vary depending on factors such as weather conditions, soil type, and the size of the plant. To create an effective watering schedule, consider the specific needs of your thuja plant and adjust accordingly. Avoid overwatering, as it can lead to root rot and other issues.

Conclusion

Proper watering is crucial for the health and vitality of your thuja plant. By observing soil moisture, checking leaf color and texture, monitoring growth rate, and using tools like moisture meters, you can accurately determine when your thuja plant needs watering. Additionally, considering environmental factors and using mulch can help retain moisture and reduce water requirements. With regular care and attention, your thuja plant will thrive and provide you with a beautiful green backdrop for years to come.