Companion planting is a useful gardening technique of growing certain veggies together to take advantage of their natural tendencies and relationships. This is an idea that has been practiced for centuries, and most famously with the “Three Sisters” method. Watch our video where Tricia shows how easy it is to plant using the Three Sisters method.
Companion Plants in the Three Sisters Method
The three sisters is a combination of these three plants working together:
- “Sister Beans”–deposit nitrogen from the air into the soil, in a form that the plants can use.
- Plant pole beans such as Blue Lake, Scarlet Runner, or Italian Snap, NOT bush beans.
- Make sure to inoculate your seeds with nitrogen-fixing Rhizobium bacteria, such as the Garden Combination Mix.
- The beans will use the corn as support, so wait to plant the beans until the corn is about knee high.
- “Sister Corn”–provides support for beans vines to climb upon.
- Plant your favorite sweet corn, dent corn, popcorn, or even a combination.
- “Sister Squash”–shades the ground with its large leaves to provide a good growing environment for all the sisters.
- Squash can be winter or summer types, or a combination of both.
- Sometimes a fourth sister is included: either Sunflower (donoted by an orange S) or Bee Balm. This sister also supports the beans, lures birds away from the corn with their seeds and attracts insect pollinators.
Garden Layout for the Three Sisters Planting
There are many variations on a Three Sisters garden layout. But all of them plant the sisters in clusters on low, wide mounds, rather than a single row.
The Wampanoag Method
- This method is the best known because it was the planting method that the Iroquois taught the early colonial settlers.
- It is best suited to regions with wet summers.
- Planted in mounds to reduce rotting
The Hidatsa Method
- From the northern plains, used by the Hidatsa, Mandan and Arikara peoples who planted along the floodplain of the Missouri river
- This is where each Sister is planted staggered in small blocks
- This is best for arid regions.
- Very different in that it is not planted in mounds rather in a large square with the edges mounded up to keep any water in the planting area
Layout for the Wampanoag Method
- Choose a spot that has at least 6 hours per day of direct sunlight.
- Soil should be rich in organic matter and free of stones and weeds.
- Build each mound so that it is 4” tall, and 18” diameter at the base, with a flat top that is about 10” across, see Figure 1.
- Space mounds so their centers are 4’ apart.
- You can plant your garden as soon as the night temperatures are consistently above 55°F, and not later than June 1.
- Plant the corn on the flat part at 6” spacing, see Figure 2.
- On every other mound, alternate with squash instead of corn, planting squash in a triangle pattern at 4” spacing.
- If including sunflowers or bee balm, plant those on the north side of the garden.
- Once the corn is at least 4” tall, plant the beans around the slopes of each corn mound. Planting the beans a few weeks after the corn ensures that the corn stalks will be strong enough to support the fast growing beans.
Layout for the Hidatsa Method
- Planted in a large block with mounds of corn (see Figure 3 and 4) and beans planted on the south side of their mound, 6 seeds in total (see Figure 5).
- Squash plants are place in mounds spaced 4’ at center, located on the south, east and west section of the block, see Figure 3.
- Plant sunflowers on the north side of the block, see Figure 3.
Layout for the Zuni Waffle Garden
- Requires significant space since each waffle is 12’ by 12’.
- Corn is planted in the center of each square, and plant 4-8 seeds to create a thick stand.
- Sunflowers can be planted around the edges of the waffle
- Squash is planted in each corner and in the center of the waffle (see figure at right).
Plant a Three Sisters garden this year, and grow organic for life!