You can use bags to grow your dahlia. Choose bags that are at least 12-18 inches in diameter and depth. Use fabric to make well-drained soil with good air circulation. Use a mixture of compost and perlite as a medium for the plant. Proper care also means providing sunlight (at least 6-8 hours per day) and water (enough to keep the soil moist but not waterlogged). Finally, give this plant fertilizer every few weeks during the growing season 😊