Here is a video of the engine. There are marks on the ball to make it's rotation easier to see. You will notice that at the start I hold the ping-pong ball in my hand very briefly so the liquid nitrogen will boil and start the rotation quickly.
They can be planted in the spring around your last frost date. Gladioli bloom about 90 days (three months) after they sprout in spring, so the bloom time really depends on when you plant them. In warm climates, where they stay in the ground year-round, gladioli bloom anytime from late spring (deep South) to midsummer (middle South).
Sometimes called sword lily, these spring-planted flower bulbs (actually corms) produce a profusion of spectacularly beautiful perennial flowers during early and mid-summer. Plant Gladiolus Bulbs in abundance in spring and enjoy a burst of color during the hot summer months.For non-stop color, check out the Gladiolus Pastel Mix or for more contrasts Gladiolus Black Star ., an almost black glad that will add drama to your garden.lant Gladiolus Bulbs in abundance in spring and enjoy a burst of color during the hot summer months. For non-stop color, check out the Gladiolus Pastel Mix or for more contrasts Gladiolus Black Star ., an almost black glad that will add drama to your garden.