Mastering Succulent Care Under Grow Lights: How Often to Water and Thrive!

Succulents are beloved for their low-maintenance nature, but even these hardy plants require proper watering. When you grow succulents under grow lights, the usual cues for watering (like rainfall and sunshine) are absent. This begs the question: how often to water succulents under grow lights? The answer isn‘t as straightforward as you might think, and it depends on a variety of factors.

Understanding Succulent Watering Needs

Succulents are masters of water storage. Their thick, fleshy leaves and stems are designed to hold onto moisture, allowing them to thrive in arid environments. However, this doesn’t mean they can go indefinitely without water.

Overwatering is one of the biggest threats to succulents. When soil remains too wet for too long, it creates an environment where root rot can develop. This can lead to wilting, discoloration, and eventually, plant death.

Factors Affecting Watering Frequency Under Grow Lights

Several factors influence how often you should water your succulents under grow lights:

• Type of succulent: Different succulent species have varying water needs. Some, like Echeveria, are more prone to overwatering, while others, like Haworthia, are more tolerant of dry conditions.
• Potting mix: A well-draining potting mix is crucial for succulents. A mix that retains too much moisture can lead to root rot, while a mix that drains too quickly can dry out too fast.
• Pot size: Smaller pots dry out faster than larger ones, meaning you’ll need to water more frequently.
• Grow light intensity: Brighter grow lights encourage faster growth, which in turn, increases the plant’s water needs.
• Temperature and humidity: Warmer temperatures and higher humidity lead to faster evaporation, necessitating more frequent watering.
• Season: Succulents tend to grow more slowly in winter, requiring less water.

The “Feel” Test: A Simple Guide to Watering

The best way to determine if your succulents need water is to perform the “feel” test:

1. Stick your finger into the soil.
2. If the top inch of soil feels dry, it’s time to water.
3. If the soil is still moist, wait a few more days.

Watering Techniques for Succulents Under Lights

• Bottom watering: This method involves soaking the pot in a basin of water until the soil is thoroughly moistened. This helps ensure even hydration and reduces the risk of overwatering.
• Watering can: Use a watering can with a fine rose to gently apply water to the soil. Avoid getting water on the leaves, especially during the hottest parts of the day.

Signs of Overwatering and Underwatering

• Overwatering: Yellowing or browning leaves, mushy stems, and a foul odor from the soil are all signs of overwatering.
• Underwatering: Shriveled or wrinkled leaves, drooping stems, and a dry, brittle texture are indicators of underwatering.

Preventing Overwatering: A Key to Success

• Choose a well-draining potting mix: A mix containing perlite, pumice, or sand will help promote good drainage.
• Use pots with drainage holes: This allows excess water to escape, preventing the soil from becoming soggy.
• Don’t water until the soil is completely dry: Allow the soil to dry out thoroughly between waterings.
• Avoid overwatering during winter: Succulents go dormant in winter and require less water.

Adjusting Watering Frequency Based on Season

• Spring and summer: During these active growth periods, succulents will need more frequent watering.
• Fall and winter: As temperatures cool and the days shorten, succulents slow down their growth. Reduce watering frequency to once every few weeks or even less.

A Word on Humidity

While succulents prefer dry environments, they can still benefit from a bit of humidity. You can create a humid environment for your succulents by placing a humidifier nearby or by grouping them together.

The Importance of Light

Grow lights are essential for succulents, providing the light they need to thrive. However, it’s important to choose the right type of grow light and provide the appropriate amount of light.

• LED grow lights: These are energy-efficient and provide a full spectrum of light, making them ideal for succulents.
• Fluorescent grow lights: These are also energy-efficient, but they may not provide the same level of light intensity as LED lights.
• Incandescent grow lights: These are not recommended for succulents, as they produce too much heat and don’t provide the right spectrum of light.

Final Thoughts: A Balanced Approach to Watering

Watering succulents under grow lights requires a balanced approach. By understanding the factors that influence watering frequency, using the “feel” test, and adjusting your watering schedule based on season, you can keep your succulents happy and healthy. Remember, it’s always better to err on the side of underwatering than overwatering.

What You Need to Learn

Q: How often should I water my succulents under grow lights in the summer?

A: During the summer, you may need to water your succulents every 7-10 days, depending on the factors mentioned above. Keep a close eye on your plants and adjust the watering schedule as needed.

Q: What if my succulents have soft, mushy leaves?

A: This is a sign of overwatering. Allow the soil to dry out completely and consider repotting your succulents in a well-draining potting mix.

Q: How can I tell if my succulents are getting enough light?

A: If your succulents are stretching towards the light or their leaves are losing their vibrant color, they may not be getting enough light. Adjust the intensity or duration of your grow lights as needed.

Q: Can I water my succulents with tap water?

A: It’s best to use filtered or distilled water for your succulents. Tap water can contain minerals that can build up in the soil and harm your plants.

Q: My succulents are losing leaves. What should I do?

A: Leaf loss can be caused by several factors, including overwatering, underwatering, pests, or disease. Inspect your succulents carefully to determine the cause and take appropriate action.