Plant size codes make schedules concise, but they can be easy to misread when different stock types appear in the same package. Container designation is only one part of the specification. The plant's dimensions, quality requirements, format, quantity and delivery conditions all influence how a quote should be interpreted.
01 / Plant material
A code is not a complete description
Codes such as #1, #5 or #15 commonly refer to container categories in nursery trade, but the applicable standard and actual dimensions should be checked in the project specification and supplier quote. Container volume does not, by itself, state the plant's height, spread, caliper or branching. Those attributes may appear in a separate schedule column or specification clause.
Different suppliers may describe stock using different conventions. When comparing quotes, ask the supplier to confirm how the quoted size meets the specified requirement. Make the unit and format explicit in the estimate rather than carrying a shorthand that a reviewer could interpret another way.
02 / Plant material
Compare like with like
A plug, a 10 cm pot, a larger container, bare-root stock and B&B are different supply formats. They can differ in production, root condition, handling, delivery method and planting needs. A quote for the same species in another format is useful information, but it is not a directly comparable price until the contract requirement and any approval path have been checked.
For trees, the schedule may specify caliper, height or root-ball details alongside a container or B&B designation. For grasses and wetland material, the schedule may use plugs, cells or trays. Preserve those differences when grouping quote requests and checking supplier responses.
03 / Plant material
Size affects logistics as well as unit cost
Larger stock can change pallet or truck space, unloading equipment, handling time and site access requirements. A package with many small plugs may have a high plant count but different load characteristics than a smaller number of larger trees. Delivery planning should account for both dimensions and total quantities, not only line-item counts.
Staging can matter too. If the site cannot receive the full order at once, phased deliveries may change freight cost, plant holding requirements and coordination effort. Identify those conditions early enough for the contractor and supplier to discuss a workable plan.
04 / Plant material
Keep size traceable through the estimate
Carry the specified size alongside the species and quantity from schedule to takeoff, quote request and final estimate. If a supplier offers a different size, record it separately with the supplier's description and any caveat. This makes review easier and reduces the chance of a price being attached to the wrong format.
When size wording is ambiguous, check the project documents and ask a focused clarification question. Do not infer equivalency from a container number alone. A traceable size review supports a more defensible estimate and gives procurement a clearer starting point after award.