Zaltrees are the largest flora of the twilight strip on Vivatus.
Up to 20m tall, with thin trunks and wide, dark leaves, Zaltrees have adapted to have as large a photosynthesising area exposed to the scarce light as possible. Their foliage spreads out over 14m or more in the case of some trees.
Their lower branches have discoloured leaves and also bear the flowers of the Zaltree. These are bowl-shaped, and contain nectar to attract Yagal, which act as their pollinators.