From the GrowOrganic newsletter:

Money doesn’t grow on trees… but fruit does. Happy harvest!

$10 Off Any Order This Week
It’s easy! Go to GrowOrganic.com, log-in, shop this week & enter LOYAL at checkout!

Please note that the $10 discount is applied to the merchandise subtotal (excluding sales tax & shipping). Limit one use per customer. Offer valid on internet orders only (store pick-up option available) through 7/20/12.
You must be logged in or create an account for the offer to work during checkout (as it will not work on “guest ” checkout). All online purchases qualify, except Gift Cards. Cannot be applied to past orders.

They had trouble with their software and the coupon code was not working.  However, they told me that they would honor the coupon if you add a comment to the order form, requesting the $10 for coupon “LOYAL”.

We finally ordered some AZOMITE (minerals) and you can order “free” seeds and the shipping is only $3.50.

Check out the MANY gardening supplies and products at http://www.groworganic.com/