[permaculture-oceania] Would a thick mulch kill grass?

[jedd]

On Sunday 27 August 2006 9:06 am, Robyn Francis wrote:
 ] Havent heard of choko being used to smother out grass - it's been used to
 ] smother lantana but takes a few years.

 Hi Robyn,

 I've had limited success with choko myself - the heat here last
 year just killed it right back, which destroyed some of the myths
 I'd heard about the stuff.  With the lantana-over-a-few-years thing,
 was that in a temperate or sub-tropical climate - ie, did the vine
 have to start from scratch in spring, or was it incremental?

 The numbers I've seen quoted on the size of these things in a single
 season implies some pretty impressive credentials as far as area
 shaded.  Do you think the problem would be the rate of growth,
 or the ability to compete, or the %age of shade it casts?   Would a
 high density grid of irrigated plants help, do you think?  I've not
 had to deal with kikuyu anywhere, only couch and a few other
 weeds (heliotrope, rhodes, and similarly less 'runny' plants) so I'm
 definitely in speculative territory here.

 Jedd.