If you want a healthy rose garden, two of the most important things to get right from the start are the site and the soil. Whether you plan a cluster of containers on an apartment balcony or an extensive garden in a section of your yard, roses need lots and lots of sunshine – 5-6 hours a day. With the right light – and good air circulation – your roses will bloom well and can better withstand pests and disease. Add the right soil to the mix, and your plants will grow and thrive.
Planting rose “islands” in your lawn is a great way to get full sun and good air circulation – two things your roses need to thrive.
Photo Credit: ©2001 Dolezal Publishing/John M. Rickard
If you’re lucky enough to have a blank slate for a yard, it’ll be easier to find that full-sun site and amend the soil to a perfect rose-growing match.
Photo Credit: ©2001 Dolezal Publishing/John M. Rickard
When taking a soil sample, dig a hole at least 16 inches deep and 12 inches in diameter. Using a clean trowel and collecting cup, take a soil sample from the side of the hole, about 12 inches down. (Avoid testing surface soil from your garden – since plant roots draw nutrients from subsurface soil, the reading may be inaccurate.)
Photo Credit: ©2001 Dolezal Publishing/John M. Rickard
When given the best site and soil conditions possible, your roses will reward you with beautiful blooms throughout the season!
Photo Credit: ©2001 Dolezal Publishing/John M. Rickard
In most regions, a south-facing (full sun) site with few shading structures or trees is ideal for a rose garden. If you live in desert or arid regions, limit blossom drop by choosing locations with protection from the midday sun and its peak heat. If you live in a hot, humid climate like the Deep South, prevent black spot and mildew by picking a site with exposure to drying winds and spacing your roses further apart. In cool, rainy regions like the Pacific Northwest, the northern tier of the US and much of Canada, rose gardens benefit from exposed, sloped, south-facing sites that concentrate sun, promote good drainage and aid the quick drying of foliage.
Of course, not every yard offers the ideal site, but you can still enjoy growing a beautiful rose garden if you help your soil, select the right roses and take the time to care for them and provide for their needs. (Some varieties need less sun and prefer partial shade. Others tolerate up to four hours a day of full shade, provided sun is available in the morning or evening. Matching your rose selections with your site’s conditions is an important step toward growing success.)
You should also choose a site with access to water that’s suited for easy-to-maintain paths. Although roses require less care than many other flowering shrubs, they do need regular watering and fertilizing, as well as seasonal pruning.
And don’t forget to space your roses properly for your climate. Roses grow smaller in regions with cold winters and short seasons, and grow larger in those with long growing seasons. Space roses wide apart in damp and humid regions to provide the best air flow for your plants.
Just as your yard may not be the perfect site for growing roses, the existing soil may be less than ideal for these well-loved plants. Soil for roses is best when it’s loose, quick-draining and well-textured. It should have nearly equal parts of sand, silt, clay and organic humus, with a slightly acid pH between 6.0 and 6.5. If your soil is less than perfect, it’ll need some amending.
Because roses are deep-rooted plants, they need well-worked, rich soil at least 3 feet deep (or more). While raised beds reduce the need for deep soil preparation – a 20-inch-tall, open-bottom planter requires preparation of soil just 16 inches deep below grade – there’s still some work involved.
The first step is to get to know your soil. Buy an at-home soil-test kit and find out what your ground is made of and what it’s lacking. Also take into consideration what’s been growing in your intended growing space. For example, if the area has been used for growing other shrubs, the soil could have become compacted and too alkaline. It may even have formed hardpan (a layer of clay clustered 10-12 inches below the surface) and not drain properly as a result. If that’s the case, it’s important to loosen the soil, restore its non-mineral components and correct any deficiencies.
Start by working in equal parts of organic compost and sandy loam to improve dense, claylike soils. In heavy clay soils, add gypsum as directed by your soil test. Add well-rotted manure, a slow-release balanced fertilizer, or amend your soil with superphosphate to help young roses establish their roots. You can toss in some sulfur or peat to make the soil more acidic.
If you’re growing roses in containers instead of in the ground, choose pots that allow for a root ball at least 12 inches in diameter for miniatures and 24 inches in diameter for full-sized roses. Plant your roses in loose potting soil amended with organic compost. Fertilize monthly and repot and root prune each season.
Besides picking healthy plants, there’s not much more important to growing robust roses than a good site and proper soil. Taking the time to select the right location and create a good soil base for your rose garden is a sure way to get it growing on the right root.
