Acacia nigrescens (is a perennial deciduous tree. )
|Scientific classifications [Edit]|
|Specific epithet ?||nigrescens|
|Knob Thorn (South Africa)|
References  ?
- Hydrangeas with blue/pink ability will have blue flowers in acid soil and pink flowers in neutral soil. Treat soil with aluminium sulfate to make or maintain blue flowers and treat soil with lime to make or maintain pink flowers.
- Suggest your own Tidbit