Greenhouse job checklist - week 1

26 - 1 January 2012

It's time to...

Sow onion seed under cover, and keep warm until germinated
Check overwintering plants for signs of greenfly and other pests, and treat if necessary
Bring potted strawberries under cover
Dig up clumps of rhubarb to force into growth in darkness under large pots or bins
Water pots of forced bulbs if their compost is dry
Water plants sparingly taking care not to splash water around
Wash glazing inside and out to let in the maximum amount of light
Insulate greenhouses by fixing bubble polythene to the glazing bars
Order seeds and young plants from mail-order companies or online
Prune greenhouse grapevines once they're dormant and the leaves have fallen