Growing Blackjack Zucchini and it depends on your jurisdiction. In some states, the legal age Growing Blackjack Zucchini to go to a casino is 18 and up, while in others it’s 21 and up. Often, the distinction has to do with whether or not the venue in question serves alcohol. In front of the trellis, dig a hole for the zucchini plants. Place the plants or seeds into the hole and cover back up with soil. Water the newly planted zucchini and space each zucchini plant at least 2 feet apart along the trellis. Once the vines have grown and can reach the trellis, help them along by attaching the vines to the trellis. Here are common zucchini growing problems with cures and controls: Seed fails to germinate. Some squash seeds are “hard”–that is naturally resistant to uptake of water which results in sprouting. To overcome “hard” seed, increase germination, and slightly decrease germination time, soak seed in tepid water for 24 hours before sowing. Zucchini Blackjack Easy to grow, popular variety with long, even, dark green fruit produced abundantly on vigorous plants. Delicious raw, steamed, baked or in stir-fries.