How to Choose Grow Lights for Indoor Plants

Posted on May 20 , 2024

In this era of insufficient sunlight, have you planted some indoor plants hoping they can thrive regardless of the season? If so, you must know that choosing the right growing light for indoor plants can be challenging. Whether you are a beginner or planning to start commercial cultivation, you can't do without some professional artificial light for plant growth. The market is full of grow lights, from the latest models of led grow lights for plants to those reliable, old-school fluorescent lights, each boasting unique selling points.


In this article, we'll explore how to select the best grow light for indoor plants based on the type of plants and their growth stages. After all, the right lighting can not only make your plants happy but also help them grow as if they were "fertilized"—you wouldn't want your plants to end up shorter than those at your neighbor's due to insufficient light, would you?

Types of Grow Lights 

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When searching for indoor plant grow lights, you'll find a bewildering array of options, each claiming to bring limitless brightness and vitality to your plants. However, understanding the basic types of grow lights and their features is undoubtedly the first step in choosing the best light source. Let’s take a look at the three most popular types of lights: LED, fluorescent, and high-pressure sodium lights, each with its own secrets and surprises for your green leaves.


LED Lights (LED Grow Lights) 

Are you still using old-fashioned bulbs? That’s somewhat "yesterday’s news." LED lights, with their high energy efficiency and long lifespan, are quickly becoming the star products for indoor plant growth. These compact light sources can provide a full spectrum from gentle blue to passionate red light, and their cooling system is so strong that it almost eliminates the need for additional cooling systems—a blessing for growers!


Fluorescent Lights 

If your wallet is feeling tight or you're just stepping into the mysterious world of indoor gardening, fluorescent lights might be more suitable for you. Not only are they budget-friendly, but they also provide soft and even light, especially suitable for newly sprouted little lives or low-light plants that don't enjoy too much sunlight. Although fluorescent lights are not as energy-efficient as LEDs, they are worth considering from a cost-effectiveness perspective.


High-Pressure Sodium Lights (HPS) 

High-pressure sodium lights, commonly referred to as HPS lights, are more suitable for the flowering and fruiting stages of plants. They produce light mainly in the yellow-red spectrum, which can promote flowering and fruit ripening. HPS lights consume relatively more energy and generate a lot of heat, possibly requiring additional cooling facilities to maintain a suitable growth environment.

Lighting Needs for Different Plants 

The healthy growth of plants largely depends on sufficient and appropriate lighting. Different types of plants have different lighting needs, and only by correctly understanding the needs of your plants can you help them choose the most suitable grow light.

  • Foliage Plants: Plants like Pothos and Spider Plants usually require low light. These plants often grow under tree shade in natural environments, thus adapting to low-light conditions. Low-wattage LEDs and fluorescent lights are suitable.

  • Flowering Plants: Flowering plants like African Violets and Orchids require strong light to promote flower formation and blooming. These plants are suited to LEDs or HPS lights that provide rich red light, which aids in flowering and fruiting. Ensuring sufficient and even light can help flowering plants maintain good blooming periods and color.

  • Succulents: Succulents like Cacti and other fleshy plants need high-intensity light. These plants are native to sun-rich environments and require a lot of light. LEDs are the ideal choice for providing high light to succulents, especially high-performance LEDs that offer a full spectrum. Proper lighting not only promotes the growth of succulents but also helps maintain their vivid colors and healthy shapes.

  • Edible Plants: Edible plants like Tomatoes, Peppers, and various herbs need abundant light to support their growth and development. These plants have higher light requirements during the growth and fruit maturation stages, especially during short daylight seasons. Using LEDs or HID lights can provide enough light for edible plants to carry out photosynthesis and synthesize nutrients, thereby ensuring the nutritional value and yield of the plants.


Plant Type | PPFD Requirements (μmol/m²/s) | Recommended Light Fixture

Succulents: 100-300 | LED or Fluorescent Lights

Foliage Plants: 100-400 | LED or Fluorescent Lights

Flowering Plants: 400-600 | LED or High-Pressure Sodium Lights (HPS)

Fruit Plants: 600-800 | LED or High-Pressure Sodium Lights (HPS)

Cannabis: 800-1500 | LED or High-Pressure Sodium Lights (HPS)


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Different types of plants have varying light needs, and choosing the right indoor plant light can enhance the health and yield of your plants. Through this article, we hope to help you provide the most suitable "sunlight" for your plant companions. For more information on grow lights, feel free to contact us below~

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