#horticulture

Plant-spacing and planting-density maths as an API, computed locally and deterministically. The grid endpoint works out how many plants fill an area in a square (rectangular) layout: from a spacing (one value, or separate row and in-row spacings) and either an area or a length and width, it returns the planting density per square metre, square foot, 1,000 ft², acre and hectare, an area-based plant estimate, and — when you give length and width — an exact edge-inclusive grid count with the number of rows and plants per row. The triangular endpoint does the same for an offset (hexagonal) layout, where rows sit spacing × √3/2 apart and fit about 15.47 % more plants than a square grid at the same spacing, and it reports the gain. The density endpoint converts a spacing into a planting density in several units, or works in reverse: give a number of plants and an area and it recommends the spacing that fills it. Lengths accept millimetres, centimetres, metres, inches or feet; area accepts m², ft², acres or hectares. Everything is computed locally and deterministically, so it is instant and private. Ideal for gardening and landscaping apps, agriculture and horticulture tools, nursery and farm planners, and reforestation calculators. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is planting layout and density; for fertilizer application rates use a fertilizer API and for mulch, soil and gravel quantities use a landscaping API.

api.oanor.com/plantspacing-api

Work with USDA Plant Hardiness Zones: determine the hardiness zone for any location from its average annual extreme minimum temperature in Celsius or Fahrenheit (returning the zone code such as 6b, the zone number, subzone and the temperature range in both units), browse the complete reference of all 26 subzones from 1a to 13b with their temperature ranges and example regions worldwide, look up a single subzone by code, and find which common garden plants — fruits, vegetables, herbs, shrubs, trees, perennials, vines, bulbs, succulents and grasses — tolerate a given zone. Every endpoint accepts input via the query string or the request body and returns lean JSON. Pure server-side computation (no third-party upstream), so responses are instant and always available. Ideal for gardening and plant-finder apps, AgTech and landscaping tools, nurseries and education.

api.oanor.com/hardiness-api