Welcome to the Krostrade Marketplace, please excuse our appearance, we are still under construction.

How Long To Leave Plant Light On. Read This First

If you want to know how long to leave plant light on, you must classify your plants into seedlings and mature plants. It’s not enough to master when to use a growing light, but you also have to perfect your plant’s light exposure duration. Remember that the greenhouse will only be the perfect plant environment if you can provide the factors that they need properly, including light. 

According to the University of Maryland Extension, lights are essential for producing sturdy plants. However, you don’t want to leave the plant light over the ideal recommendations. This article will discuss the limits and best duration for leaving the plant light both for young and mature plants. 


How Long To Leave Plant Light On. Read This First

How Long To Leave Plant Light On: Everything You Need To Know



As mentioned earlier, you need to classify your plants to know the duration of light exposure suitable for them. You can leave the plant light on for 16 to 18 hours every day to encourage growth for seedlings. This is longer than the recommendation for mature plants because younger plants require exposure more for their development. 

You can use full-spectrum lights at 6 inches above the seedlings in the greenhouse. The light intensity is also as necessary, so the best fixture to use are four tubes. Check your set-up afterward to ensure that plants receive the light equally and at the maximum intensity using reflectors to reach the plants’ top and sides. 


Mature plants

Compared to leaving the light on for a maximum of 18 hours, more mature plants can thrive best at a duration of 12 to 14 hours. However, do note that different plants will vary on the maximum requirement. Therefore, some plants can grow sufficiently with six hours of exposure, while some only require four hours of intense light every day.

With the former, you can place the lights a foot away, and those with low light needs can have a distance of three feet from the fixtures. You must also keep in mind the intensity required for your plants and if they also receive sunlight. Gardeners often leave the plant light on for six hours at night if the plants do not receive their optimal requirements during the day. 


How Much Light Do Plants Need In The Greenhouse?

Now that you learn how long to leave plant light on, the next step is to ensure that you are not overexposing or underexposing your plants to light. An easy way to do this is to create a routine using an alarm and timer to know when to turn on and shut off your lights in the greenhouse. Different systems won’t need manual intervention for your convenience. 

The system will automatically switch the lights on and off for you, but you can also use a simple alarm to notify yourself of the routine. More so, always monitor your plants for any signs of overexposure or underexposure to the lights. For example, those that receive light over the limit can experience wilting and yellowing of the leaves, while those that require more light can die because of the failure to do photosynthesis


Light Intensity In The Greenhouse

You must also check the light intensity in the greenhouse to ensure that your plants meet their requirements. You can measure light intensity in foot candles, and to give you an idea, seedlings require 1,000-foot-candles for growth. However, the fixtures’ distance to the plants also plays a role, and the specific requirements of your species will vary. 


Types Of Greenhouse Lighting Fixtures


T5 Fixtures

If you’re considering using fluorescent lights, the best fixtures to use are T5 fixtures. They are excellent for growing in the greenhouse because of their long lifespan while also using less energy and causing a low impact on the environment. T5 fixtures are ideal for starting seeds until the plants grow entirely. 


High-pressure sodium fixtures

Another popular fixture that you can have in the greenhouse are high-pressure sodium types. Compared to the first one that is best for starting plants from seeds, these fixtures are useful if you want to encourage budding and flowering. They are an excellent alternative for the traditional incandescent bulbs for use later in plants’ growth cycle.


LED fixtures

Lastly, the most modern and long-lasting fixtures are LED bulbs. They have a long lifespan and minimal heat output making them more energy-efficient in the long run. You can also choose from different types if you want fixed or programmable fixtures. 



We all know that plants require light for their growth and development, and the invention of the greenhouse allows us to mimic the optimal environment for our plants. Therefore, you must know how long to leave plant light on to ensure that your plants grow healthily. In general, younger plants should receive around 18 hours of exposure while their more mature counterparts can do well with only 14 hours. 

However, the emphasis is necessary on checking the light intensity and distance as well. More so, different plants have different requirements, so that these lengths will vary. The main takeaway here is that younger plants should have their light on for longer compared to mature plants.


Leave a Reply

Your email address will not be published. Required fields are marked *

How To Care For Carpet Roses. 3 Factors To Master

How To Care For Carpet Roses. 3 Factors To Master

You have three factors to consider to know how to care for carpet roses. Gone are the days where roses are only centerpieces, but with proper care and maintenance, you might have one of the best groundcover plants. Carpet roses will undoubtedly improve any garden bed, and you’ll be pleased how they are not even demanding constant attention. 

If you want to protect your plants from challenging environmental conditions, you can also consider growing carpet roses in the greenhouse. This will make maintenance more comfortable, and you should face fewer challenges and problems. This article will teach you the ideal conditions and practices to keep your carpet roses blooming happily. 


In general, carpet roses are easy to grow and are relatively low-maintenance. However, the emphasis is necessary on knowing the variety you have and adjusting the plants’ practices and requirements accordingly. 


Factor #1. Location

The first consideration to ensure proper care for carpet or groundcover roses is in the ideal growing environment. Remember that even though groundcover roses are not picky in sites, they should still be in an optimal location to thrive. You can determine the ideal location of your carpet roses depending on their type

For example, some groundcover roses prefer full sun, but others will thrive in partial sun. You also want to plant them in well-draining soil because these plants are prone to drowning. After ticking these boxes, allocate enough space for the carpet roses to keep them from getting overcrowded that can cause problems over time. 


Factor #2. Maintenance

The second factor when caring for carpet roses is the practices in maintaining them. To start, remember that it’s crucial to plant them in a well-draining area. Overwatering the plants or leaving them in standing water can drown the plants or encourage root rot. Always check the ground if the roses need watering and amend the soil to improve its structure.

Carpet roses will also benefit from fertilizers. You can boost the plants and encourage them to fully cover the ground by feeding above and below the roses. Check the label instructions of your fertilizer and put your plants on a schedule for fertilizing regularly. 

Do you prune carpet roses? Depending on what type you have, some roses will benefit from pruning. You can cut the stems after flowering to keep the roses from overgrowing their area and maintain a tidy look. 


Factor #3. Common problems

Carpet roses, much like other groundcover plants, are prone to pests because of the large surface area they have. Therefore, prevention is vital to keep the pest population at bay. Gardeners often use insect spray or fungicides on the carpet roses to keep off insects or fungi. 

You can also practice preventative measures such as isolation of new plants and immediately removing plants with pests or diseases to prevent the spread. Always practice proper hygiene and sanitation to avoid bringing pests into the area. More so, maintain the ideal environment to discourage insects’ reproduction like aphids or the development of diseases like powdery mildew. 

Unlike other groundcover plants, carpet roses don’t have enough foliage to smother weed. Therefore, you want to use landscape fabric with drip irrigation on top to deter weed growth. You can also mulch under the systems or add a pre-emergent herbicide in early spring or fall to manage weeds.



How To Grow Carpet Roses

You can propagate carpet roses by rooting sections of the stem of a parent plant. Carpet roses typically develop rooted stems in spring or fall that you can dig up and repot. However, remember that the best propagation method will vary on the type of roses you have, 

You may also purchase potted ground cover roses, and you can transplant them in a bigger container or onto the ground outdoors. You can again grow bare-root carpet roses after the frost in the garden the same way you would when planting other roses. Amend the soil with organic matter and water the plants after putting and firming them in place. 

Because of their low-growing habit, you can have many uses for carpet roses. You can use them as borders or barriers for paths and driveways, add texture to a slope or wall, or fill a bed in the garden. However, be prepared that these plants can become leafless during the dormant season. 



One of the best groundcover plants to consider is carpet roses. However, you must know how to care for carpet roses to keep them healthy and looking tidy. To start, grow them in an ideal location to lessen the chances of developing drawbacks and problems. 

You can check the type of roses you have to know where is the best place to grow them. Once you have ensured the ideal location, maintain your plants by watering and fertilizing regularly. Be mindful not to overwater your plants as this can drown them, and you can also boost growth by feeding according to the label. 

You can also keep the roses from overgrowing their space by pruning after the flowering season. Lastly, do the necessary preventative measures to keep the roses from acquiring pests and diseases. Use fungicide or insect spray to keep fungi and pests at bay and maintain stable conditions to discourage growth and spread. 

Leave a Reply

Your email address will not be published. Required fields are marked *

Sign up to our newsletter!