Garden tool with adjustable length tines

A gardening tool, comprising a handle portion, a plurality of first tines having a predetermined length depending therefrom, a plurality of second tines depending from said handle, said second tines being variously disposed between said first tines, at least some of said second tines including two portions, a first portion being hollow and having a predetermined internal diameter .omega., said first portion being provided with external threads disposed thereabout, said second portion having an external diameter lesser than said internal diameter, said second portion being telescopically disposed for movement in said first portion for varying the length thereof, means disposed on said second tines for arresting the telescopic movement, said means including a rotatable clamp defining a central bore through which said second tine passes, said central bore being provided with a variably tapered internally threaded section for threadably engaging said external threads disposed about said first portion the degree of narrowing of the taper of said internally threaded section varying substantially from one end thereof to the other, so as to facilitate clamping of the second portion in place with respect to the first portion.