The first and smallest melon bagged into onion mesh bags, to support the vertical growth of the vines.
This is what I found online about harvesting any kind of watermelons-
Use a combination of the following indicators: (1) light green, curly tendrils on the stem near the point of attachment of the melon usually turn brown and dry; (2) the surface color of the fruit turns dull; (3) the skin becomes resistant to penetration by the thumbnail and is rough to the touch; and (4) the bottom of the melon (where it lies on the soil) turns from light green to a yellowish color. These indicators for choosing a ripe watermelon are much more reliable than "thumping" the melon with a knuckle. Many watermelons do not emit the proverbial "dull thud"when ripe.
To apply the first rule, I looked closer at the tendril and this is what it looks like
Still looks green!
The other thing, that was mentioned about Sugar Baby watermelons is this-
When the plants are in full bloom, you can expect the watermelons to be ready for picking thirty five days later.
Well, the plants were in full bloom mid- July. So, it seems we are pretty close to that thirty five days. We also had more melons since then. Almost all, are much larger than the first one above.
This is the largest one! I had to use 2 bags for this one!
This is probably the avg size.
I've got two in a bag!
Vertically grown watermelon vines.
At this point, we've still waiting to harvest the first melon. Supposedly, Sugar Baby watermelons are really sweet as they have a high sugar content. I hope we can taste them, soon!