As your statement in quotes
Mr. Irfan saying right, its not proper season of bitterguodr, cucumber, and kaddu. In my project "Step by Step Summer 2013 Seed Germination Process", I can regular upload images from seed starting to harvest vegetables for guideline of vegetable lovers, see also images as well as growing time and month in which date I can upload my pictures to help right time of growing vegetable seeds.I planted some seeds of bitterguord ,cucumber and kaddu some days ago.they didn,t germinate.now i sowed them again 4 days ago but still waiting