Garden / June 13, 2018 / Oriane
A raised bed is ideally 18 - 24 inches deep, but if you are building your raised beds on top of existing earth you wilI have some leeway here. I have successfully gardened in boxes built over earth with only one foot of soil depth. You can find both detailed instructions for building a raised beds and multiple choices for buying raised beds here.
Companion planting is often touted for the benefit of cutting down on pest infestations, but it also serves well to conserve space. Shade tolerant plants will benefit from being planted next to taller crops. Basil likes a respite from hot sun and does well next to tomatoes. Lettuce will keep producing all summer if shaded by almost any taller plant. Early harvested vegetables, like spinach, radishes and peas, can be planted with slower growing crops like broccoli or peppers, which will not take over the space until the spring harvested vegetables are gone.