When to Order: Lead Times, Pre-Orders and Contract Growing

Every plant on a grower's list is a decision the grower made a season or several seasons ago: what to sow, what to pot on, what to hold for another year. The one idea that matters most is that a buyer who orders inside those decisions, a year ahead for small stock and several years for trees, plants what it designed, and a buyer who orders in the planting season plants what everyone else left.

This page explains how long each grade takes to grow, the three ways a buyer secures stock ahead of the season, pre-order, hold and contract growing, what a growing contract contains, the planting calendar in this market and how to read a current list for the season ahead. Most of the trade's planting is done in autumn and winter, when the soil is wet; a grower's winter root trainers were sown or struck the summer before. It draws on HortOS, a free directory of New Zealand wholesale plant growers with their published availability and trade prices, where each grower's list is published with its date, and on what the industry's national body publishes. It is a guide to timing, not a promise about any grower's stock.

Quick facts

How long a grade takes	A tube or plug is three to six months from seed or cutting; a first pot or #1, six to twelve months; a shrub grade or #3, about a year to eighteen months; a 45 litre bag or #15, three to four years; 200 litres or #65, five years or more.
Pre-order	Booking stock from a grower's forward list or its current list before the season, with a deposit where the grower asks for one, so the plants are held and potted on for the buyer.
Contract growing	The buyer specifies or supplies the seed or cuttings and the grower sows, grows and holds the plants under a written agreement with a deposit, milestones and a dispatch week.
The planting season	Most of the trade's planting is done in autumn and winter, when the soil is wet; a grower's winter root trainers were sown or struck the summer before.
Who grows what	On 24 September 2026, six growers in Waikato and three each in the Bay of Plenty and Canterbury listed root trainers or tubes on nz.hortosapp.com, and only a handful listed advanced tree stock, which is why so much New Zealand planting stock is grown to order.
The list's date	Every list on HortOS carries the date it was updated. A current list is the season's top-up order; next season's order is a conversation with the grower now.

How long a plant takes

A plant moves up a grade by being potted on, and each move costs a season of growth and a season of the grower's space. The table gives the common times; a fast perennial is quicker and a slow tree slower, and a grower's own figures are the ones to ask for.

Plant grades and container sizes by market explains the grade names. The point of the table is the last column: the larger the grade, the earlier the order, because nobody grows a five year tree on the chance that someone will want it.

Three ways to secure stock

• Order from the current list. The list shows what the grower lists today, in the sizes it has. For a top-up, a small order or a planting that can take what is there, it is the whole method. On 24 September 2026, six growers in Waikato and three each in the Bay of Plenty and Canterbury listed root trainers or tubes on nz.hortosapp.com, and only a handful listed advanced tree stock, which is why so much New Zealand planting stock is grown to order.
• Pre-order and hold. A buyer confirms an order for stock the grower lists or will have by a date, pays a deposit where asked, and the grower holds and pots the plants on for it. The hold has a length in weeks or months, after which the stock goes back on the list or the hold is charged. This is how a landscaper secures a spring hedge in autumn.
• Contract growing. The buyer specifies what is to be grown, from the grower's seed or the buyer's, and the grower sows, grows and holds it under a written agreement. The buyer carries the risk of changing its mind; the grower carries the risk of growing it well. This is how a revegetation project, a street tree run of one cultivar or a plant under a breeder's right that no grower lists gets grown at all.

What a growing contract contains

A growing agreement does not need to be long, and the good ones fit on two pages. The species and cultivars, with the botanical names. The grade and the specification each is grown to, with the standard named where one applies. The counts, and the allowance for losses in the nursery. The seed or cutting source, who supplies it and who keeps the records. The timetable: sowing, potting on, hardening off, dispatch week. The price per plant and the payment terms: a deposit on signing or sowing, a progress payment, the balance on dispatch. What happens if the buyer cancels, if the grower's crop fails, or if the planting is delayed by weather. And the inspection right, which is the buyer's visit before dispatch.

Sourcing native plants for a restoration project shows a contract growing timetable for revegetation, and specifying and procuring trees the clause a street tree contract is grown to.

The calendar in this market

Most of the trade's planting is done in autumn and winter, when the soil is wet; a grower's winter root trainers were sown or struck the summer before. A grower's year runs backwards from that. Propagation of the next season's small stock happens in the warm months; potting on follows; the stock is hardened off outside in the weeks before the planting season; dispatch follows the first soaking rains or the frost date. A buyer who calls in the planting month finds the grower dispatching, not sowing.

The practical calendar for a buyer is one conversation a season early. In the planting season, plant this year's order and walk the nursery for next year's. Before propagation, confirm next year's species, grades and counts, and sign the contract for anything grown to order. Before dispatch, inspect, count against the contract and confirm the week. Reading a grower's price list and trade terms explains the hold, deposit and validity words a pre-order uses.

Reading a list for the season ahead

A current list on HortOS says three things to a buyer planning a season out. The grades a grower lists today say what it grows and roughly what it will have a size larger next year. The updated date says whether the grower is active this season. And the plant pages, which gather every grower's lines for a plant by size, say how many growers list a plant at all, which is the measure of how hard it will be to find next year. The region hubs (Auckland, Canterbury, Waikato, Bay of Plenty) show the growers by town with the number of lines each has published.

Median trade prices are not published for most New Zealand plants yet, so this guide quotes none; each grower's own published price sits beside its line on the plant pages. A price on a list is today's; a price in a growing contract is the one that holds for the dispatch week, and it is usually a little above the list to pay for the holding.

What to watch for

• Ordering in the planting season. The month of the planting is the month the stock was sold. Order the season before; for trees, the year before.
• Treating a listed quantity as a reservation. Stock on a list is subject to prior sale until an order and a deposit hold it.
• A contract with no dispatch week. A growing agreement without a date is a hope. Put the week in, and the rule for weather.
• Changing the plan after sowing. A contract grown crop is the buyer's from the day it is sown. Settle the species and counts before, not after.
• No inspection before dispatch. The visit three months out is where a short count or a soft plant is fixed. Skipping it moves the problem to the planting day.

Getting it right

1. Set the planting week, then count back by the grade's growing time to the order date.
2. Walk the nursery or read the list during this year's planting for what will be a grade larger next year.
3. Confirm next season's species, grades and counts before the grower propagates, and sign a growing contract for anything grown to order.
4. Pay the deposit, agree the hold length and the dispatch week in writing, and diary the inspection.
5. Inspect three months out, confirm two weeks out, and order the stakes, guards and mulch to arrive with the plants.

A word of caution

The growing times on this page are the trade's common practice, and a grower's own figures for its climate and its species are the ones to plan on. The grower counts are what the HortOS hubs printed on 24 September 2026, and the live pages change as lists arrive. Holds, deposits and growing contracts are each grower's own terms, and HortOS never answers about stock, dates or terms on a grower's behalf.

Sources

• New Zealand Plant Producers Incorporated: the plant producers' national body.
• Plant Pass, New Zealand's plant production biosecurity scheme: certified nursery biosecurity practice.
• Department of Conservation, native plant restoration: planning a native planting.
• Trees That Count: native tree planting and funding.