Wondering about Scroggy in Fruitvale

I had an email enquiry last night, asking for info as to the origin of the name "Scroggy Stream", which flows from Fruitvale down to the Whau River.

Here is my reply:

You've asked a very intriguing question. All I have are bits and pieces, and possible theories, though.

I think the stream was named after the hill -- Allotments 158, 159 and 163 of the Parish of Titirangi, bounded today by Rua, Tahi and Fruitvale Road. Rua Road used to be Croydon Road, and was a crossing at some point (apparently) with the railway, at which point people called it Scroggy Hill, the highest point between New Lynn and Glen Eden.

The original Crown Grant holder from 1864 was Frederick Lambert Prime, Mayor of Auckland City from 1874-1875. He owned the site through to 1908, and died 5 May 1916. The name "Scroggy Hill" started to appear in the Auckland Star from around 1907, so it might have been a local nickname for the hill. There are Scroggy Hills in Scotland, the work "scrogg" meaning "thick underbrush". 

Prime didn't come from Scotland, though -- he came from Cambridgeshire.

So, if any readers can add insight into the origin of a hill and stream named "Scroggy" out in the underbrush of New Lynn's environs -- feel free to share.