11/5/2023 0 Comments Do succulents need direct sunlight![]() The easiest way to determine whether the location you are considering or already selected is fair in terms of the exposure of light is with a commercially available lux meter, a measuring device for the intensity of light. It is important that the measuring range covers at least the range between 7 lux and that a reasonably reliable and accurate reading is possible. Such devices are available either in garden supply stores or online. The following applies to cacti: the lighter the better. Many species of cactus can tolerate the blazing midday sun even behind glass. A cactus with an unhealthy light green color, or a cactus that hangs a bit limply.Ī very bright place without intense sunlight with at least 3,000 lux is well suited for all cacti. An opuntia (that cactus with ‘rabbit ears’) whose new ‘ears’ grow tall and thin. Some examples of this are a cactus that used to be a ball, but now suddenly becomes elongated with a narrow point at the top. This process is called etiolation, where your cactus often turns a bit yellowish as well, instead of deep green. Unfortunately, that growth spurt is not good for your cactus at all, although you may at first think that it is going well. Sometimes this growth is very fast because a cactus wants to find exposure to light as quickly as possible. That is a sign that the cactus is looking for more exposure to light. The growth is not nicely round and full, but thin and elongated, maybe even pointed in a bulb cactus. And in the meantime, to save energy, the new growth will be distorted and weary. ![]() Still, there are some signs you can spot before it’s too late and your cactus has given up with grief.Ī cactus that is too dark will always look for more exposure to light. How do you recognize that your cactus is getting too little light? Cacti do not grow quickly, so you often only notice later if they are not happy in a place. Cactus grow lights are an option as they provide plenty of bright light. It is also possible to provide artificial light to the cacti. Don’t forget to always place adult plants in cactus soil near windows. Most cacti actually need only a few hours of bright sunlight. 7 Conclusion: Do cactus plants need sun?.6 What to do when a cactus becomes etiolated?.2 How much sunlight does a cactus need?.
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