I have a school which has a 4′ x 8′ area and the teacher wanted some guidelines.
Soil – I prefer the SLC Raised Bed Mix. It’s more expensive, but makes it very easy to plant. You should only need one cubic yard. Get a parent with a pickup truck to get the mix.
Mulch – The mulch I like is called Black Forest Mulch.
You can buy it at Lowes or at St. Louis Compost.
Construction – Gateway Greening has a good PDF on the materials and construction of the bed.
Edging – If you can afford it, it’s nice to edge the bed with pavers. It not only makes the garden look more professional, but keeps the grass away from the garden. The kids will be walking around the garden a lot and it will prevent the area from getting muddy. Here’s a garden done by one Boy Scout with pavers.
Fertilizer – The first year you might not need fertilizer, but you can add some later in the year if plants look like they might need some help. I use an inexpensive 10-10-10.
Water – It’s imperative that you have a source of water nearby. You may need a special key to turn the water on. You can buy those at a hardware store. Talk to the maintenance people for help. I also like to leave a short hose by the garden so that it’s easy to water. You will find that during the summer that the raised bed will need more water.
Maintenance – Schedule parents/families/scouts to maintain and water the garden during the summer. Once a week should be fine. Weeding and watering are the main chores.
- Make sure the kids can walk all the way around the garden. They will need to be able to plant and pull weeds without getting in the garden.
- You want most of your plants to be blooming in September. This is when the kids will be coming back to school and the Monarchs will be migrating.
- Find a location with the most sunshine possible.
- Make sure the small plants are in the front where they will get the most sun. You don’t want the tall plants to shadow the smaller plants.
Here is a general idea of what I might plant.
I’ve divided it into three areas – Tall – Medium and Small.
Dill, Fennel, Milkweed, Agastache, Blazing Star, Zinnia-tall, Verbena bonareinsis
Shasta Daisy, Salvia, Maltese Cross, Echinacea, Lantana, Coreopsis lanceolata, Zizia,
Parsley, Allium, Pussy Toes, Coreopis (small), Zinnia -Profusion