Acacia “Yallaroo”: is a member of the Mimosaceae family and is a tall, spreading shrub. The parents, of this hybrid Wattle, are Acacia covenyi and probably Acacia vestita, the Weeping Boree.
Some years ago we germinated seed collected from one of our Acacia covenyi plants. As the seedlings developed we realised that they differed, in appearance, to Acacia covenyi. Their phyllodes were similar in colour to those of Acacia covenyi but were smaller and a different shape. Their growth habit was also different. Branches were pendulous rather than upright and plants were considerably larger that Acacia covenyi.
Some Acacia vestita plants are growing close to the Acacia covenyi and on examination we found that the phyllode shape was between the shape of Acacia covenyi and Acacia vestita. The hybrid size was closer to the latter rather than the former species. The brilliant yellow, globular flower heads are reminiscent of both the blooms of both parents. Pendulous branches were similar to those of the Weeping Boree.
Acacia “Yallaroo” has phyllodes that are 20 millimetres long by 5 millimetres wide. They are broadest in the middle, taper to both ends and blue-green in colour. Brilliant yellow flower heads are carried in the phyllode axils.
In spring Acacia “Yallaroo” becomes a blaze of colour. This hybrid is one of our best spring-flowering Wattles.
We have heard that a nursery has had hybrids develop from Acacia covenyi seed purchased commercially. Apparently the seed was collected from cultivated plants growing with other Wattles.
We now propagate Acacia covenyi from cuttings. We also propagate Acacia “Yallaroo” from cuttings. This preserves the hybrid’s desirable horticultural attributes.