How To Root Knockout Roses From Cuttings

You can learn how to root knockout roses from cuttings in only two easy steps. And if you have some knowledge in rose propagation itself, you’ll have a quicker time adapting the techniques for success. More so, the advantage of knockout roses is that they are specifically bred to be disease-resistant, putting them on a more comfortable playing field once more. 

According to the University of Maryland, these roses are even immune to typical rose fungal diseases and are generally effortless to grow. However, propagation will always be more comfortable to start in a controlled environment like the greenhouse. This structure can create healthy parent plants for cuttings and also as a starting location before transplanting permanently. 


How To Root Knockout Roses From Cuttings

How To Root Knockout Roses From Cuttings Successfully


Step #1. Gathering cuttings

The best time to take cuttings from knockout roses is from November to February, but what makes them unique is that you can still collect any time of the year if necessary. The process itself is by removing the top eight inches of a branch from a knockout rose bush at a 45-degree angle. And similar to how you’d prepare cuttings of other plants, you want to remove all the flowers and leaves, except the two at the top. 

Some gardeners even remove the bark at the first three inches of the bottom of the cutting. This will help establish them because the cutting will absorb the medium’s nutrients and create new roots more comfortably. Speaking of which, don’t forget to the dip the end of the cutting in a rooting hormone powder to make the root establishment much faster. 


Step #2. Planting

What is the ideal medium for knockout rose cuttings? You can use a mixture of fertile potting soil and sand or compost and sand for better drainage. Moisten this mix and lose it up before inserting the cutting at around four inches deep. 

To create an ideal rooting environment, cover the pot with a plastic bag while making sure that it doesn’t directly touch the cutting itself. You can place this pot in the greenhouse where it will receive indirect sunlight. And lastly, regularly monitor the medium and mist with water if necessary. 

Once the cutting has rooted, you can transplant it outdoors in a permanent location that receives five to six hours of sun. Some gardeners wait for a month after rooting, but you can also leave them be for a year before transplanting. Once ready, transplant in winter when they are dormant by carefully digging up its root ball with soil intact.

Place the young plant in the new hole and firm the soil around it. A space of eight inches among the knockout roses is optimal. Afterward, water regularly with mulching for moisture retention and feed the young knockout roses once a month for optimal growth. 


Planting Knockout Roses



In general, knockout roses will thrive well in zones 5 to 9. It’s ideal to have them in a location with a maximum of eight hours of sun daily for flowering. As for the soil itself, fertile, well-draining soil with a pH between 6.0 and 6.5 would be optimal, and you can always incorporate compost and mulch to improve the ground. Lastly, keep in mind that these plants can get 5 feet tall, so plan the space to maintain good air movement. 


Watering and fertilizing

The greenhouse will be comfortable for watering because you can use drip irrigation for watering. This will help retain soil moisture without overwatering. More so, mulch the soil to further help with the soil moisture while also keeping weeds at bay. 

To fertilize knockout roses, you can feed them nitrogen fertilizer in spring and fall to make up for the potential nutrient deficiency. As they grow, you can feed once in spring only because over-fertilizing can reduce flower growth. Lastly, don’t forget to water before fertilizing to avoid burned roots. 



While knockout roses are self-grooming, pruning them is still beneficial to keep a neat garden. Use gloves and long sleeves and prune early every spring with bypass pruners. You don’t want to crush the stems, but instead, cut the dead canes close to the plant’s base. 

You can prune up to 50% and cut at a 45-degree angle facing out for better shape and preventing standing water in the canes. You can also prune back in summer to help the plants produce flowers for fall. Overall, pruning is advantageous for aesthetics and the health and growth of knockout roses. 



With knockout roses, gone are the days when you have to get anxious about rose diseases and tricky maintenance practices. Knowing how to root knockout roses from cuttings will help you propagate this gardener-friendly rose and further enhance the garden’s colors and overall look. There aren’t even any unique methods to do so, and you might even have an easier time rooting if you start indoors. 

The process is as simple as taking an 8-inch cutting, stripping it of bark for easier nutrient absorption at the bottom, and dipping in a rooting hormone powder. Then, place it in a pot of potting soil and sand, cover with a plastic bag, and maintain moisture. And voila, you can transplant the young knockout roses a month or a year after establishing roots. 


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How To Prevent Root Rot In Hydroponics: 3 Useful Tips

If you’re a newbie gardener who’s looking to find ways to hone your skills, you’d want to learn how to prevent root rot in hydroponics even before this problem affects your plants.

Hydroponics can be advantageous to crops in more ways than one. However, it also comes with risks of diseases, such as root rot, which can be destructive or even lethal to your plants.

Unfortunately, there are no effective methods to recover the wilted parts that were affected by the root rot once it hits your plants. The only thing you can do if you do not want this catastrophe to befall your crops is to prevent it before it happens. Read on to learn more about this subject.


What is Root Rot?

Root rot is a disease that attacks the plant roots and causes them to suffer decay. This usually happens when a lack of oxygen supply occurs in the substrate.

To give you an idea, think about plant roots that are submerged in water that only has a little oxygen in it. Over time, the plant suffocates and dies.

Aside from rot and decay, this disease also leads to the proliferation of fungi that are naturally present in the soil. These include Rhizoctonia, Alternaria, Pythium, Botrytis, Fusarium, or Phytophthora. As soon as fungi colonies start to grow, they tend to target the weakened roots and infect your precious plant babies.

Once the plant becomes infected, they won’t be able to take in what they need to grow – water, oxygen, and other nutrients. When this happens, it won’t be long before the plant dies.


What is Hydroponics?

In case you’re not aware, the term hydroponic is derived from a Latin word that means “working water”. To put it simply, hydroponics is an art that involves growing various types of plants without soil. If you’re like most people, the first thing that comes to mind when somebody talks about hydroponics would be a picture of plants with roots suspended into the water without using any type of growing medium.


Avoiding Root Rot in Hydroponic Systems

Detecting and identifying root rot can be tricky. When your plants get infected, their leaves and roots gradually wither until the whole crop itself dies from the lack of nutrients, which is a common symptom of many diseases.


What causes root rot in hydroponics?

One of the requirements in hydroponics systems is oxygen. Without it, your plants are basically on the road to death. On the other hand, lack of such is one of the major triggers for root rot, and it must be avoided at all costs.

Just like when planting in soil, you loosen up the ground so that your plants’ roots can have their required intake of oxygen. That is the case for crops grown in aqueous solutions as well. If they cannot breathe, they would not be able to grow.

Another agent for root rot is the temperature. The last thing you would want in your system are parasites that leech nutrients intended for your plants and infect the water during the process. In common terms, these fungi are called molds.

One of the best breeding grounds for these is warm and moist areas. For this reason, if the water temperature inside your reservoir is high, then you are susceptible to it. Something as minor as letting the solutions exposed to sunlight can already be a risk factor.


3 Useful Tips on How to prevent root rot in hydroponics

There is good news! Root rot in hydroponics can be prevented! Just follow these tips:

Tip#1: Use the right air pump

If you do not want root rot to affect your plants, you merely have to avoid its causes. If you need oxygen, keep the water bubbling by providing an air pump of appropriate size, and also give importance to proper ventilation in the room.


Tip #2: Maintain the temperature

The temperature should be maintained within the 70 to 80 degrees F range. Get rid of any materials that can make your system vulnerable to infections, and make sure not to disturb your crops while they are trying to grow.


Tip #3: Get rid of the rotten parts

However, if you failed in preventing the disease, then the rotten parts should be removed immediately. Cut them off as there is no chance of reviving them, and focus on the potential new growth instead. Fix your hydroponics system and eliminate the risks.


Why Give Greenhouse Gardening a Try?

Greenhouse gardening offers numerous benefits to greens aficionados who dare to take their gardening experience to the next level. Aside from acting as a shield against the effects of inclement weather, a mini, hobby, or semi-pro greenhouse can also serve as a protective layer that keeps harmful bugs and critters at bay.

What’s more, its enclosed structure allows you to control your plants’ growing conditions including the temperature, light, moisture, and ventilation of the greenhouse’s internal environment. With a controlled environment, you’ll be able to extend growing seasons and grow plants that aren’t native to your area.



No matter how well-informed you are about how to prevent root rot in hydroponics, you cannot completely eradicate the risks. Therefore, to avoid the worst-case scenario, you should be prepared to sacrifice the infected for the sake of others. While you’re at it, consider trying your hand at greenhouse gardening as well.


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