Measured by the number of emitted foliage leaves (or their scars) that are at least 10 cm wide. The scars are the dried-up bases of the petioles of past leaves. Along the pseudostem, the leaves are arranged in two spirals. Count the number along one spiral and multiply by 2. Tip: Mark the number of leaves on the pseudostem as it grows to avoid having to count scars since planting.