If it's not a hybrid and you didn't grow any other watermelons, then yes you can.

Follow up - I went through all the steps. Lime, potassium sulfate, de-thatch with a verti-seeder and straw blankets where necessary to control erosion (if we ever get and rain again). To help build up the organics, I used spent beer mash from my friend's micro-brewery. Since it's wet it isn't really easy to spread around. I mostly flung it with a shovel, so the coverage isn't real even. It smelled kind of funny for a couple of days, but doesn't seem to have hurt anything. I may do another application in the early spring. I used a blend in the front yard and mostly tall fescue in the back shady yard. Water, water, water and more watering. Watering 6,000 sq feet in a royal pain in the arse! I just couldn't do the recommended thrice per day, but I usually got two waterings in, until things started sprouting. By far, the best water came on too few occasions from Mother Nature. She really knows how to soak the yard evenly. Low and behold, the dirt is now covered with green grass (and a few weeds) it looks great and we are pretty pleased with the results. I have mowed it once (at the tallest setting) and may mow toward the end of November to mulch the leaves. Click o the link below to see where I am now. Here is a link that might be useful: My most recent post about winter prep & weeds

Beautiful!! Grandfather & DD are wonderful craftspersons, looks like an antique & fits the space perfectly! Marble is a great top for it!! Jan

be nice to properly Id the plant we are wondering about ... pix??? ... there is no reason seeds cant dry on the plant ... and presuming they are not winter killed in seed form ... though its been so mild this year.. probably not an issue ... but then... many named cultivar plants can be sterile ... so there is always that issue ... also ... hibiscus defines at least a couple rather diverse plants ... if you mean rose of sharon.. its probably not a good idea to grow more from seed ken