It may not be a substitute for a talented landscape or garden designer, but the GrowVeg online interactive garden planning tool offers lots of practical advice for planting your vegetable garden:

Creating Plans
Quickly produce garden plans, add plants and change the layout. Either metric units or feet and inches are supported.

Growing information
Just click for full details of how to grow each plant, where to position them, etc.

Spacing and Crop Families
Clearly shown by the colored area around each vegetable.

Personalized Planting Chart
Print a chart showing how many of each plant you require and when to sow, plant out and harvest them. Our advanced system works out the dates for your own area.

Reminder Emails
Reminds you what needs sowing and planting out in your garden (optional.)

Easy Crop Rotation
Plan next year’s garden and it shows you where to avoid planting each vegetable.

You can check it out with a 30-day free trial, then it’s $25 year to subscribe.