All you need is a glass of water at least an inch deep and a support system of gravel (or some other medium) to keep the plants standing straight. But not all plants have roots. It can cope without much water – and without much light, too. Exotics in general will probably need more water than native species, Ellis adds. A plant's roots are designed to take up food and water into the plant's vascular system. The Veggie Patch Reimagined has a great list of drought tolerant plants. If you love your grass lawn, but don’t love the constant watering, then you need … Perennial sunflowers: Perennial sunflowers are tough, long blooming perennials that don’t need much water. You buy a Drought Tolerant Seed Mix. Plants that do not live in soil, or that have adapted methods for feeding without roots, frequently do not have them. Water your cast iron plant every two to three weeks, and water it sparsely—its roots will rot if you give it too much moisture. Don't worry about watering houseplants by choosing low-water indoor plants. Available on Amazon ; $12.99 for 38 stalks. Amaranth, cow beans, corn, mustard greens, purlane, spinach, tomatoes, chard and a few others don’t need as much water. Indigenous to West Africa, this plant is one of the hardest in the world. Drought-tolerant plants, such as coneflower, daylily, ornamental grasses and butterfly weed, make gardening easier because they require less care. Zones 3-8; Globe thistle: Globe thistle, a native to the Mediterranean, is a striking plant with silvery foliage and globes of steely blue flowers. Kalanchoes Blending this distinctive palette of colors, forms, and textures allows you to create plant combinations to suit any landscape situation. Plant Drought Tolerant Vegetables – Some vegetables don’t need as much water as others. That's a perfect fit for a low-maintenance garden. The cheery plants boast bright yellow blooms that attract a variety of pollinators. They don’t love direct sun, so a north-facing window tends to be best. “These are really cool plants,” says Fleming-Barnhardt. The types of rootless plants in the world are varied. Although the year’s dry winter has many homeowners switching to grass-free yards, those low-water alternatives don’t always hit the spot when what you want is soft green turf. Snake plant. Don’t be alarmed – this one won’t attack! “You actually don’t water the soil; you just water inside the top of the plant and let the water pool there.” The drought-tolerant bromeliad only needs to be watered when the top two inches of soil feel dry. The houseplant experts at Costa Farms share 10 of their favorites -- and tips. That said, it does get its name from its long, sharp leaves. Grouping plants together by watering requirement can help you accurately prevent overwatering of those that don’t need much. So, watch your fingers. These beauties make great indoor or outdoor plants. Plant Combinations The desert offers a surprisingly diverse selection of low-water-use landscape plants. By grouping plants with similar watering needs and choosing plants that don't require much moisture, you'll spend less time watering. Extremely hardy and difficult-to-kill, cast iron plants first came from the forests of Japan and Taiwan and now can be found in many homes.