Growing grapevine from seeds in Singapore

Recenlty, I bought some "red/purple" grapes from the supermarket. They were quite large and round, and had many seeds. It was annoying to eat grapes with seeds and more so when they were large.

However, the grapes were quite sweet and juicy. I took the seeds and just buried them in the pot of soil. I had forgotten about them and thought that they would never germinate. I was wronged. They did germinate after a couple of days. I was surprised and quickly transferred them to another pot. The seeds were buried in a pot with watermelon cuttings because I thought that the seeds would never germinate.

I already have three green grapevines already which I bought from World Farm. They were with me for a year already but there is no sign of flowering. I think there is something wrong with the soil or missing nutrients. I need to do more research on this.

I didn't expect the grape seeds to germinate in Singapore's climate. I hope that the seedlings will grow well and develop into vines. Recently, my balcony's garden has been infested with spider mites. My watermelon plants have leaves with spider mites. I didn't notice them until the leaves started to dry up due to the spider mites sucking on the leaves. They are very tiny and can be found under the leaves. I didn't want to use any chemical, so I used a stiff brush to manual brush them away.

Grape Seedlings