Training melons and watermelons to grow vertically is referred to as trellising and is one of the advantages of growing melons in a high tunnel. Most melon cultivars and personal size (less than 7 pounds) watermelon cultivars are amenable to trellising.
A direct public offering (DPO), like the more traditional IPO, is a stock's introduction to the stock market. The stock is offered to the public for the first time. Unlike an IPO, which utilizes an underwriter to sell shares to the public, DPO shares are purchased directly from the issuing company.
Furthermore, most brokerages will not allow investors to sell IPO shares within a certain time period (generally 60-90 days), which prevents any short-term gains. The other, more-realistic way to profit from IPOs is to buy into some carefully chosen stocks after they've become available to the broad market.