A flower bed works when three things line up: heights are layered so everything is visible, plants sit in generous odd-numbered groups instead of a one-of-everything sampler, and spacing is based on mature size rather than the pot in your hand. A flower bed planner app makes those rules concrete — Sow designs the layout on a photo of your actual bed, using real plants with known sizes and bloom times.
The layout rules that make beds look designed
Layer by height: tallest plants at the back of a bed viewed from one side (or the center of an island bed), mid-height fillers in the middle, low edgers up front. Repeat: pick 5–8 plants and repeat them in drifts of 3, 5 or 7 — repetition reads as intentional, variety-of-one reads as chaos. Contrast forms: pair spiky uprights (salvia, little bluestem) with rounded daisies (coneflower) and soft mounds (catmint, fescue).
Space for the plant's third-year size, not its nursery-pot size. Beds that look sparse in year one look right in year two and full in year three; beds planted "full" on day one become a maintenance fight.
Plan bloom succession, not just a snapshot
The classic disappointment is a bed that peaks for three weeks in June. Build a bloom relay: early bulbs and spring perennials, a summer core, late-season asters and grasses, plus evergreen or structural plants for winter. Because every Sow plant card includes bloom and care details, you can audit your design's calendar before you buy anything.
Design your bed on a photo of your bed
Sow generates bed designs directly on your photo, labeling every plant in place. Drag to adjust drifts, swap a plant for a better fit, and check each choice's zone, sun and mature size on its card. When the layout is right, the design is also your labeled shopping list, with nursery price comparison built in.
