Rooftops are often underutilized spaces that most owners overlook. But a really good (and unorthodox) way to revamp your otherwise drab rooftop is to start a rooftop garden or sky garden.
But how do you go about creating one?
How to Start a Chicago Rooftop Garden
- If you are in a shared space, the first step should be to check with the landlord or building superintendent about attaining roof rights, or to ask what roof access you are granted.
Attaining rooftop garden rights in Chicago (if needed), as well as many other metropolitan areas, can be an expensive and cumbersome process. Most of the time you will have to petition your idea for a rooftop garden to the building’s board or council, and then you must receive at least 75% approval before you can obtain rights and begin construction. Working with an experienced rooftop landscape architect can save you a lot of time and money.
Contact Botanical Concepts for a Free Consultation - Once rights have been secured, it is important in this stage to get in contact with a contractor or the building engineer to assess the condition of the roof and help establish a list of necessary finances. If you decide to tackle this project solo, you alone will bear the burden of all insurance costs, maintenance fees, materials and other expenses.
For those in shared buildings, a homeowner may look to share the cost with another resident in the building who is interested in the project as well. - After your finances are in order, the next step is to develop a plan. There are several things you must consider before rushing off to the nearest home and garden store, such as the layout of your rooftop garden, how many garden beds you’d like to have, whether or not you’d like raised containers, what kinds of plants you intend to grow, etc.
It is important that you opt for sturdy materials, such as large half-barrel planters, which are unlikely to dry out or topple over under windy conditions, and raised garden beds that are at least 10-inches deep, to allow for proper root growth.
In addition, you must also find a water supply. Especially during the summer time, garden beds must be watered frequently. If desired, automatic watering systems can be installed to alleviate the constant lugging of watering cans up to the roof and back.
What Kind of Plants Can You Grow in Chicago?
By now, a question you have in mind is “What kind of plants will prosper in the Chicago area?”
For those who are unaware, most of Illinois has a hardiness level of 5. Hardiness refers to a plant’s ability to tolerate certain temperatures. Zone 5 plants must be able to survive winters where temperatures are as low as -10 to -15 °F.
Most zone 5 gardeners wait until early to mid-May to plant vegetable and annual beds, both of which do very well so long as they’re not hit by late frost while young.
Plants that do well in this area include perennials like Echinacea, Phlox, Lillies, Poppies and Salvia. Most of these flowers are vibrant purples and pinks and will bring a lively, exuberant feel, and pleasant smell, to your rooftop.
If produce is more your style, carrots, beats, tomatoes, chives, parsnips, and spinach, among others, do well in zone 5 areas. Garlic, thyme, and sage would also fair well in the Chicago area.
The list of plants and vegetables is long. A quick Google search will yield more possibilities for your garden, so it’s worth checking out for more ideas.
While this may all seem daunting for most homeowners, hiring an experienced rooftop architectural design company can cut down the uncertainties and maximize your time and budget.
Frame the Cityscape for the Ultimate Chicago Rooftop Garden
Rooftop garden areas are becoming increasingly common in densely populated urban areas such as Chicago, New York City, Los Angeles and Miami. Their tranquility provides a much needed respite from the day to day chaos of the fast paced city and can be used as outdoor living space, an entertainment area or simply as green space for growing plants.
While rooftop gardens offer many benefits to their owners there are some special considerations to take into account when designing them. With a little planning though it’s easy to create a lush rooftop garden design that won’t block the phenomenal skyline view.
Benefits
Gardening offers myriad rewards for the owner in terms of health and stress reduction while helping to improve ambient air quality, but rooftop gardens also provide a few unique benefits. Some of the greatest reasons for having a rooftop garden come in the form of climactic and environmental benefits.
Typically the rooftops of urban buildings are barren and the weather can affect the surface harshly; adding a garden to the roof helps to lessen this impact. Having a “softer” surface on the roof will also act like a natural insulator for the building; it will help to reduce heating costs in the winter by holding heat within the building when it’s cold and cooling costs in the summer months by deflecting the hot summer rays when temperatures climb.
Planting a garden space on the roof will help to reduce the storm water runoff considerably and in turn decrease negative effects seen from the water draining to the street below.
In some circumstances a rooftop garden may qualify for LEED credits. Between this and the reduced utility bills, it’s easy to see why people are putting in rooftop spaces!
Rooftop Garden Planning Considerations
When planning a rooftop garden there are a few things to bear in mind, especially if the skyline is to be kept open.
- It’s important to decide if the space will be dedicated only for growing plants, or if it will function as an outdoor living space as well. Having a seating or hangout space within the garden is a great use of space and makes it multi-functional but is easier to include these wants in the initial design consultatation.
- Think down the road. More often than not plants are bought when they are immature, and still have growing to do. Pay attention specifically to what the height of mature plants will be and work with specimens that tend to stay more compact or dwarf to keep from impeding the view.
- Mix plant types to provide some variety in the design. Shrubs, ornamental grasses and flowering perennials can be interspersed among the ornamental annuals and vegetables to add to the design.
- Build raised garden beds to add a small amount of vertical height within the design. Putting the beds on casters or spacers to keep the bottoms up off the roof will prevent roots from growing through and in turn damaging the building’s roof.
- Start with a main focal piece in the planning process and design everything else around that. It can be something like a water feature, a stunning plant specimen, or even a gorgeous piece of pottery used as a container. Having a main focus will help to tie the entire design together.
- After the main focal piece is decided upon, then it’s best to limit the entire design to no more than 3 colors. Choose one for the primary design element, with one or two others acting as accents. Too many colors in the design elements – furniture, containers, walls, flooring – can cause the space to look cluttered and busy. Neutral colors like beige, white, and grey make good accents and help draw out the beauty in the plants.
- If the rooftop garden will function as a living space, or will be used for entertaining, it’s important to consider some lighting solutions so it can be enjoyed after dark. Ambient lighting will create an inviting, relaxing atmosphere after dusk and extend the time the space can be utilized. Be sure to make it a little brighter by the stairway or door for safety reasons.
With some simple planning and design considerations it’s easy to create a gorgeous, lush rooftop garden that can provide a tranquil, green space!
Botanical Concepts Chicago is an award winning Rooftop Deck Design Company who can help you with your rooftop garden project. Schedule a consultation today.
