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Go Green: Best Lighting Options for Indoor Succulents
Nurturing succulents indoors requires paying attention strictly to their basic necessities, and essential among these is lighting. A properly illuminated environment is a key factor in maintaining the health and vitality of your indoor succulents, which thrive under a certain amount of sunlight each day for optimal growth.
Understanding the Phototropic Nature of Succulents
Just like other plants, succulents are phototropic, meaning they grow towards light. Research reveals that this is because of a growth hormone called auxin that is responsible for elongation of cells, and its distribution is affected by light. In addition to phototropism, which is a plant’s response to light direction, succulents also display heliotropism, or a response to sunlight, by opening and closing their leaves.
Types of Light Suitable for Indoor Succulents
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Natural Sunlight: The ultimate source of light for all vegetation is the sun. Indoor succulents need approximately four to six hours of sunlight daily to thrive.
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Artificial Light (Grow Lights): Indoor growers utilize different kinds of artificial light to supplement the deficiencies of natural sunlight. These include LED lights, fluorescent lights, and high-intensity discharge lights.
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Indirect Light: Indirect light comes from a source that isn’t facing directly at the plant, such as light reflected off walls or through sheer curtains.
Each of these light types provides a unique set of benefits and constraints that can affect the health and growth of indoor succulents.
Natural Sunlight: Sun-Loving Succulent Species and Sunburn Protection
Many succulent species are sunlight-adapted and need to be placed by windows receiving sunlight for over six hours daily. For instance, Aeonium, Agave, and Sempervivum all prefer lots of strong, direct sunlight. Such succulents will show better coloration and compact growth under direct sunlight.
However, keep in mind that extreme light exposure can cause sunburn in succulents. Signs include scars, bleaching, or drying. It’s important to ensure a transitional period for outdoor succulents that are moved indoors or vice versa.
Artificial Light/Grow Lights: Ideal for Succulents with Lower Sun Requirements
Artificial lights are perfect for succulents that don’t require as much sunlight. Examples of such include the Sansevieria, Haworthia, and Gasteria, which can survive under fluorescent light.
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LED Grow Lights: LED lights are an energy-efficient option for indoor plant lovers. They offer full spectrum light, which means they cover all light spectrums necessary for plant growth. Additionally, because they generate less heat, LED lights can be positioned closer to the plants.
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Fluorescent Lights (T5 and T8): Fluorescent lights are another great option for indoor succulents due to their low heat emission and balanced light spectrum. The commonly-used T5 and T8 bulbs emit enough light intensity to keep succulents healthy.
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High-Intensity Discharge Lights (HID): These lights produce a great amount of light but can be a bit excessive for indoor succulents if not carefully monitored. They are best used for larger indoor garden setups.
Indirect Light: Ideal for Sensitive Succulent Species
Indirect light suits those succulent species that show sensitivity to intense light. While less common, some indoor succulents such as Christmas Cactus and Bear’s Paw do better in partial shade or indirect sunlight.
Remember that overly-dim light may result in etiolation – a condition where your succulent stretches towards the light, causing it to look ‘leggy’ and weak. Therefore, it’s equally crucial to ensure the light is not too dim.
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