No need for a large garden to grow these sweet-and-crispy fruits! In fact, all you need is a short 2-3 foot vine to produce a good yield of dark green, smooth cucumbers that reach 6-7 inches long (the perfect length for slicing up and dressing salads). Hence why they're known as "spacemaster" cucumbers! Planting: Plant cucumbers after soil has warmed to about 70°F, about a week after the last frost date.