White Knock Out® Rose Tree

Growth rate: Moderate growth rate, reaching 3-4 feet in height and 3-4 feet in width.

Sizing: Our patio rose trees are primarily utilized as outdoor patio plants and are potted. Accordingly, we measure our rose trees from the bottom of the pot to the top of the tree for accuracy.

Please note: Images on our website depict plants and trees at full maturity to showcase their expected grown characteristics. These images are illustrative examples only and do not represent the size of plants or trees upon delivery.

Pruning: Annual pruning in late winter or early spring encourages robust new growth and abundant flowering. Remove any dead or damaged branches to maintain plant health and appearance.

Fertilization: Fertilize in early spring with a slow-release fertilizer formulated for roses to support healthy growth and flowering. A second application in mid-summer can promote continued blooming.

Winter Protection: In colder zones, apply a thick layer of mulch around the base after the first hard frost to protect the root system. In zones at the colder end of its range, consider additional winter protection methods, such as wrapping.

Choose a location with well-draining soil and full sun to partial shade. Dig a hole twice the width and the same depth as the root ball. Place the tree in the hole, ensuring it is standing straight, and backfill with soil, watering deeply. Mulch around the base to retain moisture and regulate soil temperature. Water regularly during the first growing season to help establish a deep, extensive root system.

Water regularly to keep the soil consistently moist, especially during the first growing season to establish a deep, extensive root system. Once established, water as needed to maintain health and vigor. The White Knock Out Rose Tree performs best in full sun, requiring at least 6 to 8 hours of direct sunlight daily. It can tolerate partial shade, but full sun encourages optimal flowering and overall health.

We process and ship your order as quickly as possible, typically within 1-3 business days. You will receive a shipping confirmation with tracking information once your item(s) ship.

We have perfected packaging and shipping plants & trees! That is why we DO NOT use any third-party fulfillment like most other online retailers. Your trees go straight from our farm to your door, safely packaged by our team of seasoned professionals. Our process ensures your plants leave our facility and arrive to your door in the best condition possible!

In cases of extreme cold or hot weather, we may temporarily delay shipping to ensure the well-being of your plants. Our primary focus is on delivering healthy and thriving plants to you. Rest assured, we'll make every effort to notify you of any delays promptly.

Please allow additional ship times during inclement weather and sale periods. We do not process or ship orders on the weekend or U.S. Holidays. Simply Trees is not responsible for delays due to carriers, local disruptions, or weather.

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At Simply Trees, we're committed to your satisfaction. If your plants arrive considerably damaged or sustained damage beyond the point of recovery, please contact us within five days at sales@simplytrees.store with clear photos for assistance. Our 30-day guarantee covers issues after planting, subject to our terms and conditions. We can't cover plants in the wrong climate or with inadequate care, but we're here to help in other situations. For a detailed understanding of our 30-day guarantee and how we ensure a fair process, click here to learn more.

The White Knock Out Rose Tree typically reaches a mature size of about 3 to 4 feet in both height and width. However, the actual size can vary depending on factors such as growing conditions, pruning practices, and local climate.

In general, Knock Out Rose Trees are compact shrubs that are well-suited for smaller gardens, borders, and containers. They have a relatively rounded growth habit with dense foliage and abundant blooms, making them ideal for adding color and interest to landscapes.

Proper spacing is important when planting White Knock Out Rose Trees to allow them to reach their full size while preventing overcrowding. Providing adequate room for air circulation also helps maintain plant health and reduces the risk of disease.

Regular pruning can help shape the tree and control its size, as well as promote healthy growth and abundant flowering. By removing dead or diseased branches and selectively pruning to maintain the desired shape, you can ensure that your White Knock Out Rose Tree remains an attractive and vibrant addition to your garden.

The White Knock Out Rose Tree is known for its vigorous growth habit. Under optimal growing conditions, it can grow relatively quickly, typically adding several inches to its height and width each year. However, the exact growth rate may vary depending on factors such as climate, soil quality, sunlight exposure, and pruning practices.

In general, Knock Out Rose Trees are considered moderate to fast-growing, and they can reach their mature size within a few years under favorable conditions. Regular watering, proper fertilization, and adequate sunlight can promote faster growth and encourage the tree to reach its full potential more quickly.

It's important to provide adequate space for the White Knock Out Rose Tree to grow and spread, as it can reach a mature height and width of 3-4 feet or more. Proper spacing allows for good air circulation and prevents overcrowding, which can lead to issues such as poor airflow and increased susceptibility to diseases.

Regular pruning can also help shape the tree and promote healthy growth. By removing dead or diseased branches and shaping the canopy, you can encourage new growth and maintain an attractive appearance. Overall, with proper care and attention, the White Knock Out Rose Tree can establish quickly and become a beautiful focal point in your landscape.

The best place to plant a Knock Out Rose Tree is in a location that receives full sun for at least six to eight hours per day. Here are some key considerations for choosing the planting site:

Sunlight: Select a spot with plenty of sunlight, as Knock Out Rose Trees thrive in sunny locations. Full sun exposure promotes vigorous growth and abundant flowering.

Soil Drainage: Ensure the planting site has well-draining soil to prevent waterlogging, which can lead to root rot. Avoid areas with compacted or poorly drained soil.

Air Circulation: Choose a location with good air circulation to reduce the risk of fungal diseases. Adequate airflow helps keep the foliage dry and prevents moisture buildup.

Space: Provide enough space for the Knock Out Rose Tree to grow to its full size without overcrowding. Consider the mature dimensions of the tree and plant it at least 3-4 feet away from other plants, structures, or obstacles.

Accessibility: Plant the rose tree in an easily accessible area where you can enjoy its beauty and easily care for it. Avoid planting it in low-lying areas prone to water pooling or where it may be overshadowed by larger plants or structures.

Aesthetic Appeal: Consider the overall landscape design and choose a location that enhances the beauty of your garden or outdoor space. Knock Out Rose Trees make stunning focal points in flower beds, along pathways, or as border plantings.

By selecting the right planting site, you can ensure that your Knock Out Rose Tree thrives and produces an abundance of bright white blooms throughout the growing season.

Planting a Knock Out Rose Tree in a planter requires careful attention to ensure proper drainage, soil quality, and space for the tree to grow. Here's how to plant a Knock Out Rose Tree in a planter:

Select a Suitable Planter: Choose a large planter with drainage holes at the bottom to allow excess water to escape. The planter should be at least 18-24 inches in diameter and equally deep to accommodate the rose tree's root system.

Prepare the Planter: Fill the bottom of the planter with a layer of gravel or small stones to improve drainage. Then, fill the planter with a well-draining potting mix formulated for roses or container gardening. You can also amend the soil with compost or organic matter to improve its fertility and structure.

Planting the Rose Tree: Carefully remove the Knock Out Rose Tree from its nursery container, gently teasing the roots apart if they are tightly bound. Place the tree in the center of the planter at the same depth it was growing in its original container. Backfill the planter with soil, pressing gently to remove air pockets around the roots.

Watering: After planting, thoroughly water the Knock Out Rose Tree to settle the soil and ensure adequate moisture around the roots. Water deeply whenever the top inch of soil feels dry to the touch, but avoid overwatering, as soggy soil can lead to root rot.

Placement: Choose a sunny location for your planter, as Knock Out Rose Trees require at least six to eight hours of sunlight per day to thrive and bloom abundantly. Place the planter where it will receive adequate air circulation and avoid overcrowding with other plants.

Maintenance: Regularly check the planter's moisture levels and water the rose tree as needed, especially during hot or dry weather. Monitor the plant for signs of pests, diseases, or nutrient deficiencies, and address any issues promptly. Prune the rose tree as needed to maintain its shape and size, removing dead, damaged, or crossing branches.

By following these steps, you can successfully plant a Knock Out Rose Tree in a planter and enjoy its beautiful blooms in a confined space like a patio, balcony, or deck.

Taking care of a Knock Out Rose Tree involves several essential tasks to ensure its health, vigor, and abundant blooming. Here's how to care for your Knock Out Rose Tree:

Sunlight: Plant your Knock Out Rose Tree in a location that receives at least six to eight hours of full sunlight per day. Adequate sunlight is essential for robust growth and profuse blooming.

Watering: Keep the soil consistently moist but not waterlogged, especially during the plant's active growing season in spring and summer. Water deeply at the base of the plant to encourage deep root growth. Avoid overhead watering to prevent foliage diseases.

Fertilizing: Apply a balanced, slow-release fertilizer formulated for roses in spring when new growth begins and again in midsummer to promote continuous blooming. Follow the manufacturer's instructions for application rates and frequency.

Pruning: Prune your Knock Out Rose Tree annually in late winter or early spring to remove dead, damaged, or crossing branches and encourage new growth and blooming. You can also deadhead spent flowers throughout the growing season to promote continuous blooming.

Mulching: Apply a layer of organic mulch, such as shredded bark or compost, around the base of the plant to conserve soil moisture, suppress weeds, and regulate soil temperature. Leave a gap between the mulch and the plant's stem to prevent moisture-related issues.

Disease and pest control: Monitor your Knock Out Rose Tree for signs of common rose diseases, such as powdery mildew, black spot, and rust. Treat any issues promptly with appropriate fungicides or pesticides, following label instructions carefully.

Winter protection: In regions where temperatures drop below freezing, consider providing winter protection for your Knock Out Rose Tree. Apply a thick layer of mulch around the base of the plant and consider wrapping the plant in burlap or providing a windbreak to shield it from harsh winter conditions.

By following these care guidelines, you can help your Knock Out Rose Tree thrive and reward you with beautiful blooms throughout the growing season.

To maintain the health and appearance of your Knock Out Rose Tree, it's essential to prune it regularly, including cutting it back at the appropriate times. Here's when and how to cut back your Knock Out Rose Tree:

Annual pruning: Knock Out Rose Trees benefit from annual pruning to remove dead, damaged, or diseased branches and encourage new growth and blooming. The best time for annual pruning is in late winter or early spring, before new growth begins. This timing allows the plant to focus its energy on producing new shoots and flowers during the growing season.

Cutting back for shape: If your Knock Out Rose Tree has become overgrown or leggy, you can also cut it back for shape during the dormant season. Use sharp, clean pruning shears to remove any excessively long or wayward branches, shaping the plant into a more compact and attractive form.

Rejuvenation pruning: If your Knock Out Rose Tree has become severely overgrown or neglected, you can perform more drastic rejuvenation pruning to renew its vigor and encourage new growth. This involves cutting the entire plant back to within 12 to 18 inches of the ground in late winter or early spring. While this may seem extreme, Knock Out Roses respond well to rejuvenation pruning and can quickly regrow and bloom.

Deadheading spent flowers: Throughout the growing season, regularly deadhead or remove spent flowers to encourage continuous blooming and prevent the plant from expending energy on seed production. Snip off faded flowers just above a set of healthy leaves or leaf nodes using pruning shears or your fingers.

By pruning your Knock Out Rose Tree at the appropriate times and with proper techniques, you can help maintain its health, shape, and blooming performance, ensuring a beautiful and vibrant display in your landscape.

Knock Out Rose Trees are prized for their prolific and continuous blooming habit throughout the growing season. Here's what to expect regarding their blooming frequency:

Continuous blooming: One of the key features of Knock Out Rose Trees is their ability to bloom continuously from spring until the first hard frost in fall. Unlike traditional rose varieties that typically have one or two main blooming periods per year, Knock Out Roses produce flowers repeatedly, providing color and interest in the landscape for an extended period.

Peak bloom periods: While Knock Out Rose Trees are known for their non-stop blooming, they may have peak bloom periods during certain times of the year. The heaviest flush of blooms often occurs in spring as the plants come out of dormancy and again in late spring to early summer. However, even outside of these peak periods, you can expect to see sporadic blooms throughout the summer and into fall.

Factors affecting blooming: The frequency of blooms on Knock Out Rose Trees can be influenced by various factors, including sunlight exposure, temperature, pruning, and overall plant health. Providing adequate sunlight (at least 6 hours of direct sunlight per day), proper fertilization, and regular watering can help promote continuous blooming.

Pruning: While not necessary for continuous blooming, periodic pruning can help rejuvenate the plants and encourage new growth and blooms. Deadheading spent flowers throughout the growing season can also promote additional blooming by redirecting the plant's energy into producing new flower buds.

Overall, Knock Out Rose Trees are renowned for their exceptional blooming performance and ability to provide vibrant color in the landscape for many months. With proper care and maintenance, you can enjoy their beautiful blooms from spring until frost.

Proper watering is essential for the health and vitality of Knock Out Rose Trees. Here are some guidelines to help you determine how often to water them:

Established plants: Once established, Knock Out Rose Trees are relatively drought-tolerant and prefer slightly drier conditions compared to other rose varieties. Water deeply but infrequently to encourage deep root growth. Depending on factors such as soil type, weather conditions, and sun exposure, water your established Knock Out Rose Trees every 7 to 10 days during dry periods.

Newly planted trees: Newly planted Knock Out Rose Trees require more frequent watering to help them establish strong root systems. Water them thoroughly immediately after planting, and then continue to water them regularly for the first growing season. Aim to keep the soil consistently moist but not waterlogged. Depending on weather conditions, you may need to water newly planted trees 2 to 3 times per week.

Watering method: When watering, apply water directly to the root zone rather than overhead watering, which can promote fungal diseases. Use a soaker hose or drip irrigation system to deliver water slowly and deeply to the soil around the base of the tree.

Soil moisture: Always check the soil moisture before watering. Stick your finger into the soil near the base of the tree. If the top inch of soil feels dry to the touch, it's time to water. Avoid watering if the soil is still moist, as overwatering can lead to root rot and other issues.

Mulching: Applying a layer of organic mulch around the base of the tree helps retain soil moisture, suppresses weeds, and regulates soil temperature. Apply a 2- to 3-inch layer of mulch, such as wood chips or shredded bark, but keep it a few inches away from the trunk to prevent rot.

By monitoring soil moisture levels and adjusting your watering frequency accordingly, you can ensure that your Knock Out Rose Trees receive the right amount of water to thrive and produce beautiful blooms throughout the growing season.

For Knock Out Roses, using the right fertilizer is crucial for promoting healthy growth and abundant blooms. Here's what you need to know:

Balanced fertilizer: Choose a balanced fertilizer formulated specifically for roses or flowering shrubs. Look for a fertilizer with an N-P-K ratio (nitrogen-phosphorus-potassium) of around 10-10-10 or similar.

Slow-release granules: Opt for a slow-release fertilizer that gradually feeds the plant over time. This helps prevent the risk of over-fertilization and ensures a steady supply of nutrients to the roses.

Micronutrients: Look for a fertilizer that contains essential micronutrients like iron, magnesium, and manganese. These nutrients are vital for healthy growth and vibrant blooms.

Organic options: Consider using organic fertilizers such as compost, manure, or fish emulsion, which provide a slow, steady release of nutrients and improve soil health over time.

Application timing: Apply fertilizer in early spring, just as new growth begins, and again in late spring or early summer after the first flush of blooms. Avoid fertilizing in late summer or fall, as this can stimulate new growth that may be susceptible to frost damage.

Follow label instructions: Always follow the manufacturer's instructions for application rates and frequency. Over-fertilizing can lead to nutrient imbalances, burned roots, or other plant stressors.

By selecting the right fertilizer and applying it correctly, you can help your Knock Out Roses thrive and produce an abundance of beautiful flowers throughout the growing season.

Winterizing your Knock Out Rose Tree is essential to ensure its health and vitality during the colder months. Here's how you can do it:

Mulching: Apply a layer of organic mulch around the base of the tree, extending out to the drip line. This helps to insulate the roots and retain moisture in the soil.

Pruning: Remove any dead, diseased, or damaged branches from the tree. Additionally, consider pruning back the longer branches to reduce wind resistance and prevent breakage during heavy snow or ice storms.

Watering: Before the ground freezes, give your Knock Out Rose Tree a deep watering to ensure it has enough moisture to sustain it through the winter. However, be cautious not to overwater, as soggy soil can lead to root rot.

Protecting the graft union: If your Knock Out Rose Tree is grafted, consider wrapping the graft union with burlap or tree wrap to prevent damage from freezing temperatures.

Wind protection: If your area experiences strong winds, consider erecting a windbreak around your rose tree to shield it from drying winds and prevent desiccation.

Anti-desiccant spray: Applying an anti-desiccant spray to the foliage can help reduce moisture loss through transpiration during the winter months.

Rodent protection: Install hardware cloth or wire mesh around the base of the tree to deter rodents from gnawing on the bark during the winter.

By taking these steps to winterize your Knock Out Rose Tree, you can help ensure its survival and promote healthy growth come springtime.