suggestions planting times

[linzelu100]

I want to mail my nieces seeds every month, that they can plant that month (indoors or out). They visited my garden this year (which I thought looked disastrously), but they fell in love! In love with vegetables and gardening and bugs. Now they keep asking me for seed, and I have plenty to share with them. I thought it be neat to send them seeds every month (since they like getting mail) and they could learn to garden that way. Their parents are giving them garden space.

But here's where I need suggestions, some months I don't plant anything so I don't know what to send them. I can order the seed, that's not a problem. I'm in Virginia 7a and I start planting February with celery and onions- then by June I don't plant much more. August I start fall veg and that stops pretty soon. What could I mail them for January, July, and Sep, Nov, Dec? Any Suggestions?