Mr Armstrong said Mr Jamieson was the main source of the Jersey Bennes available locally so far.
The Armstrong and Co workforce was picking brassicas.
''We've got a massive amount of cauli and broccoli to cut. There's a very big shortage of cauliflower. We're not cutting anything else at all.
''It's nice for a change,'' Mr Armstrong said on Friday.
Meanwhile, Potatoes New Zealand urges everyone to tuck into potatoes.
''All New Zealand-grown potatoes are GE-free and packed full of health benefits,'' it said in its November Means New Potatoes material.
''They are fibre-rich, have more potassium than a banana, and are bursting with vitamin C. Easily digested, full of antioxidants, rich in minerals and they make you feel fuller for longer. Pretty spudtacular, isn't it?
''Their short season means we all need to make the most of their delicate skin and sweet, tender flesh. We encourage you to get those premium new season potatoes on your menus now - while they last!''