How to Check the Number of Trees Before You Pay

How do you check a tree count using spacing and survival?

Divide the area of an acre or hectare by the area each tree occupies, then take off the trees that died. This gives a quick expected count to compare with the seller's figure. One acre is 4,046.86 square metres and one hectare is 10,000 square metres, so trees per acre equals 4,046.86 divided by the spacing area.

The figures are arithmetic from the spacing, not measured counts. Consultant guidance links spacings to products, for example 2 m x 2 m for firewood, 2.5 m x 2.5 m for building poles, 2.5 m x 3 m or 3 m x 3 m for transmission poles, and 3 m x 3 m or wider with thinning for sawlogs (EUCA Eco Consults, August 2026).

Now apply survival. If a block was planted at 2.5 m x 2.5 m and about 92 percent of the trees are alive, the expected count is about 1,600 x 0.92, which is about 1,470 per hectare. Thinning, fire, theft and felling lower it further, and a seller who quotes the planting figure for an old stand is overstating. A 10-acre block planted at 3 m x 3 m began with about 4,500 trees, and the live count today may be well under that. Ask the seller for the planting date, the spacing, any thinning and any losses, then test the answer in the field.

How do sample plots work?

A sample plot is a small area where you count and measure every tree, so that you can scale up to the whole block. The plot used in this guide is 20 m by 10 m, which is 200 square metres or 0.02 hectare. One hectare holds 50 such plots, so the trees you count in one plot multiplied by 50 is the estimate per hectare. For an area in acres, multiply the per-hectare figure by 0.4047 for each acre.

How to lay them out:

1. Divide the planted block into a rough grid, or walk a line across it and place a plot at fixed steps, so the plots are spread evenly and not placed where the trees look best.
2. Peg a 20 m by 10 m rectangle at each point, with the long side along the planting rows where you can.
3. Count every living tree inside, and separately count dead trees and gaps. Count trees that touch the edge on two sides only, so they are not counted twice.
4. Write the plot number, the count and the GPS location in a notebook.

The plot size is a choice. A Brazilian study of an 8-year-old eucalyptus stand tested plots of 200, 300, 400 and 500 square metres in circular and rectangular shapes and found simple random sampling with 300 square metre circular plots the best balance of error, cost and time in that stand (Pesquisa Florestal Brasileira). Conditions differ in Uganda, so the 20 m by 10 m plot here is a practical choice, not a standard. Our full visit checklist is in inspect a forest before you buy.

What error margin should you expect?

The margin depends on how uniform the stand is and how many plots you count. It shrinks as you add plots, because the standard error of the average falls with the square root of the number of plots. Doubling the number of plots cuts the sampling error by about 30 percent. It does not remove the error that comes from miscounting or from plots that are not spread evenly.

A worked example with made-up counts, to show the method and not a real forest. A block planted at 2.5 m x 2.5 m has 32 planting positions in a 20 m by 10 m plot. Ten plots give these counts: 28, 31, 30, 27, 32, 29, 30, 26, 31 and 30.

If the seller's estimate of the same block were 6,500 trees, the count would not support it: 6,500 is far outside the range. If it were 5,900, it would. In the field, mixed-age or patchy stands, burnt patches and steep ground give wider margins, so take more plots there and treat the first estimate as provisional.

How do you count trees on 10 acres?

Place about ten or more plots across the 10 acres and apply the steps above. Ten acres is about 4.05 hectares, which is about 200 plots' worth of area at 0.02 hectare each, so ten plots cover about 5 percent of the block. If the stand is regular, ten plots are a practical starting point (our rule of thumb, not an official standard), and more are better if the planting is uneven.

A quick cross-check is to count along a few rows from end to end and compare it with the number of rows. If the block has 100 rows and an average of 45 live trees per row, the count is about 4,500. Rows that cannot be walked from end to end because of bush or slope are a warning sign about weed control and survival. After you have your own count, compare it with the listing's acreage planted, estimated number of trees and tree age on buying standing trees, and use a price per tree and price per acre check from per tree, per acre or lump sum.

What does stocking mean, and what is our estimated tree count field?

Stocking is the number of living trees standing per unit area, such as per acre or per hectare, compared with what was planted or with what the stand should carry for its age. It is a forestry term and the National Forestry and Tree Planting Act (Cap. 160, ULII text of 2003) does not define it, so the meaning here is the common forestry one.

On Land & Property each forest listing carries an estimated number of trees, along with acreage planted, price per acre, price per tree and tree age. That figure is an estimate given by the seller or the agent, not a measured count, unless the listing says that a count was done and how. Our checks look at how the number was reached, as explained in how we check forest listings, but they do not guarantee it. Always compare the estimate with your own plot counts before you pay. A forest listing sells trees only, land not included, and the harvesting deadline is negotiable with the seller.

A formal count by a forester is set out in what a forest inventory report should contain, and the way the count turns into value is in how standing timber is valued. A seller with a worked count can price a pine block more confidently; see how much is my pine plantation worth.

How accurate are tree counts, and who should do them?

A well-run sample count of a regular stand can be close, but it is never exact, and a count by the seller alone is only a claim. Three sources of error remain even with good plots: plots that are not spread evenly, miscounting in rows and edges, and change over time from theft, fire or felling between your count and the harvest. Date your count, photograph the plots and keep the notebook.

Who counts matters. You can count yourself, send a trusted person, or ask a professional. If you are abroad, you can book an escorted forest visit and ask for plots to be counted and photographed. When you hire anyone to count, check who they are first; see how to check if a property agent is genuine. When forest listings are live, browse forest and tree listings and compare each estimate with a count. As of 3 November 2026 none of our 93 published listings is a forest listing yet. Read our main forest trees for sale in Uganda guide for the full buying process.

Frequently asked questions

Related guides

• Forest Trees for Sale in Uganda: Standing Pine and Eucalyptus
• How Standing Timber Is Valued: Per Tree, Acre, m3
• Inspect a Forest Before You Buy: Site Visit Checklist
• What a Forest Inventory Report Should Contain
• Buying Standing Trees: 10 Checks Before You Pay
• Per Tree, Per Acre or Lump Sum: Which Protects You?