Work out number of plants for an area instantly with clear inputs, formula shown and shareable results.
Square grid density is one over the spacing squared. Triangular or offset planting fits about 15.5% more plants in the same area at the same centre-to-centre distance, which is why it is standard for ground cover and orchard layouts.
Plant density
square: 1 / spacing^2 per m2; triangular: that x 1.1547
Each plant sits in the gap between two in the previous row, so rows are spaced at spacing x sin(60 degrees) rather than the full spacing.
Yes, at proportionally higher cost. For ground cover the usual approach is to accept two seasons of gaps rather than pay for immediate cover.