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).
For a bountiful summer crop of colorful and carefree gladiolus follow these 10 easy steps: Step 2: Work in mulch to loosen and aeriate soil or add your favorite fresh garden soil. The ideal PH is 6.5-6.8. Step 3: Dig holes for gladiolus bulbs 4-6 inches deep and at least 4 inches apart when planting groups.tep 1: After danger of frost, plant new gladiolus bulbs or stored bulbs, cultivating 12 to 15 inches deep where soil will have sun for part or most of the day. Recommended by the National Garden Association. How to Grow Gladiolus.