Melaleuca concreta is an erect shrub with papery bark growing to 2 m (7 ft) high and wide but sometimes as high as 6 m (20 ft).
The leaves, which are covered with silky hairs when young, are 17–112 mm (0.7–4 in) long (more usually 30–80 mm (1–3 in)) and 2–4 mm (0.08–0.2 in) wide, and oval in cross section.
Their shape is linear or very narrow lance-shaped, with a pointed, although not prickly end and a prominent mid-vein.

The flowers are arranged in heads 10–15 mm (0.4–0.6 in) across on the ends of the branches and in leaf axils, each head containing 4 to 18 groups of three flowers.
The flowers are cream to white or yellow with petals that fall off as the flower opens or soon after.
The stamens are arranged in five bundles around the flower, each bundle containing 3 to 9 stamens.
Flowering occurs from August to November, mainly October and November and the fruit that follow are woody capsules in tight, almost spherical clusters up to 9.8 mm (0.4 in) in diameter and each fruit about 2–4 mm (0.08–0.2 in) in diameter.
Melaleuca concreta is an erect shrub with papery bark growing to 2 m (7 ft) high and wide but sometimes as high as 6 m (20 ft). The leaves, which are covered with silky hairs when young, are 17–112 mm (0.7–4 in) long (more usually 30–80 mm (1–3 in)) and 2–4 mm (0.08–0.2 in) wide, and oval in cross section. Their shape is linear or very narrow lance-shaped, with a pointed, although not prickly end and a prominent mid-vein.
The flowers are arranged in heads 10–15 mm (0.4–0.6 in) across on the ends of the branches and in leaf axils, each head containing 4 to 18 groups of three flowers. The flowers are cream to white or yellow with petals that fall off as the flower opens or soon after. The stamens are arranged in five bundles around the flower, each bundle containing 3 to 9 stamens. Flowering occurs from August to November, mainly October and November and the fruit that follow are woody capsules in tight, almost spherical clusters up to 9.8 mm (0.4 in) in diameter and each fruit about 2–4 mm (0.08–0.2 in) in diameter.
Melaleuca concreta