Acrocarpus fraxinifolius, commonly known as the Indian ash tree or simply Acrocarpus, is a fast-growing deciduous tree native to Southeast Asia and the Indian subcontinent. Renowned for its impressive height, it can reach up to 60 meters (200 feet) in optimal conditions, with a straight trunk and a broad, spreading crown. The tree is characterized by its compound leaves, resembling those of ash trees, with small leaflets arranged in pairs along a central stalk. Acrocarpus fraxinifolius produces showy clusters of pink to reddish-orange flowers, which attract pollinators such as bees and butterflies. Following flowering, it develops long, cylindrical pods containing numerous winged seeds. Valued for its timber, which is durable and moderately resistant to decay, Acrocarpus is often cultivated for commercial timber production, as well as for shade, windbreaks, and reforestation efforts. Additionally, its rapid growth rate and ability to thrive in a variety of soil types make it a favored species for agroforestry and afforestation projects across its native range and beyond. Zones 9-11
Germination
To germinate Acrocarpus fraxinifolius seeds, begin by scarifying the hard seed coat to enhance water absorption. This can be achieved by gently nicking the seed coat with a knife or rubbing it with sandpaper. Once scarified, soak the seeds in warm water for 24 hours to further soften the seed coat and promote germination. Prepare a well-draining potting mix, such as a combination of peat moss and perlite, and fill a container with it. Plant the scarified seeds about 1/2 inch deep in the potting mix, spacing them apart to allow room for growth. Keep the soil consistently moist but not waterlogged by watering lightly whenever the surface begins to dry out. Place the container in a warm location with indirect sunlight or partial shade, maintaining temperatures around 70-85°F (21-29°C). Germination typically occurs within 2-4 weeks, but it can take longer. Once the seeds have sprouted and developed several sets of true leaves, they can be transplanted into larger pots or directly into the garden, ensuring they receive adequate sunlight and water as they continue to grow.
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