Because of their small size, good flavor and snacking potential, grape tomatoes are increasing in popularity. According to the Texas Cooperative Extension, grape tomatoes are difficult to grow. Smaller than cherry tomatoes, grape tomatoes are labor intensive to harvest because they must be individually hand-picked. Success with grape tomatoes depends on proper fertilizer. Available grape tomato varieties include Bryan, Lucia and Santa tomatoes.
Wait until all danger of frost has passed and the soil has warmed up. Grape tomatoes are sensitive to cold weather, according to the Texas Cooperative Extension.
Plant grape tomato plants in a well-drained location with full sun or light shade. Mix organic compost or peat moss into the top 6 to 8 inches of soil to improve drainage and fertility.
Plant grape tomato plants 24 inches apart in 5-foot-wide rows. Dig the hole for each plant 1 inch deeper than the root ball. Mix 3/4 cup of lime into the soil immediately around the planting hole.
Place the plant in the hole 1 inch deeper than it originally grew. Fill in with soil, covering part of the stem. Tamp the soil down around each plant.
Water the plant, soaking the soil around the plant.
Mix 3 tablespoons of a balanced fertilizer such as 10-10-10 into a gallon of water. Apply 1 cup of this starter solution per plant.
Mulch with 3 to 4 inches of organic mulch to conserve water and discourage weeds.
Water grape tomato plants in the morning as needed to keep the soil moist. Pull weeds as they appear.
Apply a side-dressing of 10-10-10 fertilizer when the tomatoes begin to set. Use 1/4 lb. per 10-foot row.