Dig planting holes wide enough to accommodate the roots of Sweet One Hundred tomato plants and deep enough to allow only the top three sets of mature leaves to remain above the soil.
Replace one-half of the loosened garden soil with compost. Mix the compost with the soil thoroughly.
Position the plant in the hole and replace the compost and soil mixture.
Prepare a solution of starter fertilizer by mixing 2 tablespoons of 5-10-10 fertilizer with 1 gallon of water. Pour 1 pint of the solution around each tomato plant.
Spread 2 to 3 inches of straw under the plants.
Position a wire tomato cage over each plant. Use a hammer to drive the bottom 8 to 12 inches of the cage's anchors into the soil.
Water deeply when the top 1/2-inch of soil dries out. Apply moisture in the morning to reduce the risk of disease and insect damage.
Feed every two weeks with all-purpose fertilizer after fruits appear. Consult package instructions for the correct rate of application.
Snip off the yellowed bottom leaves when the plants are approximately 39 inches tall to reduce the likelihood of fungal disease.