Collecting Seeds - How to

 
Greetings all....    I have several flowering annuals  and veggies from which I
would like
to collect the seeds to plant next year....  these include

Annuals

    Marigold  (several varieties)
    Flowering Vinca  (Catharanthus roseus), also known as Madagascar periwinkle
    Coleus   (several varieties)

Veggies

    Tomatos
    Melons


Here's my question,... I am almost totally clueless about what the seeds look
like,
and how they are harvested....  

With the  flowering plants  (marigold and vinca)   do the flowers produce the
seeds and do
I wait for the flowers to die on the stem before removing and storing.

Tomatos and Melons  -  are those seeds actually the  propagatable seeds for the
plant

(Look when I said DUMB.... I mean  REALLY DUMB,   but at least smart enough to
know
which questions to ask).

So what does one look for when collecting the seeds  and how should they be
stored
for use the following year.   (   I know,  its easier to buy the seed packs,
but I'm
trying to fill gaps in my education).

Thanks for your help ( and patience !!!  )

Peter  

 Peter, go to the following website for some good advise on seed harvesting :
http://theseedsite.co.uk   Good luck ! Ben.


which I would like

periwinkle

look like,

the seeds and do

for the plant

enough to know

be stored

packs,  but I'm

 Good suggestion...  exactly what I was looking for...sorta like a "Dummies Guide
to Seed
Harvesting".... and a reference guide for everyone else.  

Thanks again for taking the time to post the link !!!

Peter