Planting quantities and top-ups.
Measure the pot at your chosen fill level, supplied root-ball displacement, annular mulch zones and rectangular planting beds.
Gather the selected product data
Use selected bag volume or mass, a seed label rate and your supplied planting margins and spacing. No species, mulch depth or sowing rate is chosen.
Choose the matching calculation
Tapered Pot Fill around Root Balls Calculator
Subtract supplied root-ball displacement from the selected tapered pot fill volume, then order mix bags.
Separate Seed Product Bag Order Calculator
Order separate seed products using their supplied label rate and pack mass; no seed type or application rate is recommended.
Measured Tree Ring Mulch Top Up Bag Calculator
Top up measured annular areas from existing to supplied target depth, excluding the central circle. Does not recommend depth or trunk clearance.
Plant Count from Supplied Grid and Margins Calculator
Count planting positions on a supplied rectangular grid after measured edge margins. Does not select plant spacing or species.
Measure and check your assumptions
How to measure and order: planting quantities and top-ups
Which measurements and product data prevent quantity mistakes for this job?
Empty pot capacity versus fill around a root ball: quantity checks
Container capacity is larger than the amount of new mix needed when an existing root ball occupies part of the vessel.
Compare purchase scenarios
Keep the estimate within scope
Use actual displacement and equivalent loose bag volume. Pot taper, drainage material, compaction and existing mix must be measured rather than silently assumed.
Collect chosen results in a free browser material project. Alternative scenarios remain separate orders.