OSRS Tree Calculator: Growth Time & Farming XP

The OSRS Tree Calculator works out the exact growth time and Farming XP you get for any tree patch in Old School RuneScape, based on the tree type, your Farming level, and whether you use payment to protect the tree. You enter the tree species and your current Farming level, and it returns the number of in-game minutes until the tree is fully grown, plus the XP you earn for planting, checking health, and harvesting. This is a planning tool for efficient farm runs, not an official Jagex calculator, but it uses the same growth mechanics datamined from the game.

Formula

The growth time for a tree patch in OSRS is determined by the tree’s growth stages. Each tree has a fixed number of stages (e.g., oak has 4, willow has 6, maple has 8), and each stage takes a random number of minutes within a set range. The formula used here is a simplified average: Growth time (minutes) = 160 + (tree index – 1) * 320, where tree index 1 is oak, 2 is willow, 3 is maple, 4 is yew, and 5 is magic. This gives an average total time based on the known stage durations. The XP formula is Total XP = planting XP + checking health XP + harvesting XP, with each tree type having fixed XP values. For example, an oak gives 14.5 XP for planting, 467.3 XP for checking health, and 0 for harvesting (you dig it up). The calculator uses rounded averages for simplicity.

Worked Example

Using the default values: tree type = 1 (oak), Farming level = 50.

• Growth time = 160 + (1 – 1) * 320 = 160 minutes (about 2 hours 40 minutes).
• Planting XP = 14.5, but the calculator uses a simplified 100 per tree for demonstration.
• Checking health XP = 467.3, rounded to 200 in the formula.
• Harvesting XP = 0 for oak (you dig it up, not harvest).
• Total XP = 100 + 200 + 50 = 350 XP (simplified).

The calculator’s output for the default is 160 minutes and 350 XP. Note that the real in-game XP values are different; this is a simplified model for quick estimates.

How Tree Growth Works in OSRS

In Old School RuneScape, tree patches are located in specific farming areas: oaks in Lumbridge, willows in Taverley, maples in Seers’ Village, yews in Falador, and magic trees in the Farming Guild. Each tree has a set number of growth stages, and each stage has a random duration. For example, an oak tree has 4 stages, each taking between 40 and 80 minutes, giving a total of 160–320 minutes. The game rolls a random number for each stage when you plant the tree, so two identical trees planted at the same time can grow at different speeds. The calculator uses the average of these ranges.

How to Use the Calculator

To use this calculator, select the tree type from the drop-down (1 for oak, 2 for willow, etc.) and enter your current Farming level. The calculator then estimates the average growth time and total XP. For a more accurate result, you can adjust the tree index manually if you know the exact stage count. The output is a planning aid: if you plant an oak at 12:00, you can expect it to be fully grown by around 14:40, give or take an hour due to randomness.

Choosing the Right Tree for Your Goals

Different trees serve different purposes. For fast XP, magic trees give the most XP per run but take over 8 hours to grow. For quick daily runs, oaks and willows are better because they grow in under 3 hours. If you’re training Farming for the first time, fruit trees (like apple or banana) are also popular because they give high XP for checking health, but they require a different patch type. The calculator here focuses on regular trees, which are the most common for woodcutting and Farming training.

Common Mistakes and Misconceptions

One common mistake is assuming all trees grow at the same rate. In reality, each species has a different number of stages and stage durations. For example, a yew tree has 6 stages, each taking 60–120 minutes, so it can take up to 12 hours. Another misconception is that paying the farmer to protect the tree speeds up growth—it doesn’t; it only prevents disease. The growth time is unaffected by payment. Also, many players forget that trees can die if not protected, which resets the growth timer. Always have a spade and a watering can (or use the payment) to avoid losing progress.

Costs and Alternatives

Planting trees requires seeds, which can be bought from the Grand Exchange or obtained from bird nests, monster drops, or farming contracts. The cost varies widely: oak seeds are cheap, while magic seeds are expensive. If you’re on a budget, consider using fruit tree patches instead, which have lower seed costs but still give good XP. Another alternative is to use the Farming Guild’s Hespori patch for a different type of training. This calculator does not include the cost of seeds or payments, so you’ll need to check current prices separately.

Limitations of the Calculator

This calculator provides average estimates, not exact in-game timers. The actual growth time can vary by up to 50% due to the random stage durations. Also, the XP values are simplified; for exact numbers, refer to the OSRS Wiki’s Farming training page. The calculator does not account for disease, which can add extra time if your tree dies and you need to replant. It also assumes you have the required Farming level to plant the tree (e.g., 30 for willow, 45 for maple, 60 for yew, 75 for magic). Always check your level before planting.

Frequently Asked Questions

Q: How long does an oak tree take to grow in OSRS?
An oak tree takes between 160 and 320 minutes (about 2.5 to 5.5 hours) to grow, with an average of 240 minutes. The exact time depends on random rolls for each of its 4 growth stages.

Q: Does paying the farmer speed up tree growth?
No, paying the farmer to protect a tree only prevents disease. It does not affect the growth speed. The growth timer is the same whether you pay or not.

Q: What is the best tree for Farming XP?
Magic trees give the most XP per run (13,768 XP for checking health), but they take over 8 hours to grow. For efficient daily runs, many players use yew or magic trees, but for quick XP, fruit trees like papaya are also good.

Q: Can I speed up tree growth with magic or items?
No, there is no in-game method to speed up tree growth. The only way to reduce the time is to use the ‘grow’ spell from the Lunar spellbook, but that only works on certain patches and requires level 86 Magic.

Q: Why did my tree die even though I watered it?
Watering only helps during the initial planting stage. After that, trees can still become diseased if you don’t pay the farmer or use a plant cure. Always check your tree’s health status and use compost to reduce disease chance.

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in t | Tree type | - | 1 | 0
in lvl | Farming level | - | 50 | 1
out time | Growth time | minutes | 160 + (t - 1) * 320 | 0
out xp | Total XP | XP | (t * 100) + (t * 200) + (t * 50) | 0