How far apart do you plant Canadian hemlocks?

Can ghaf trees live in rainy area? What plants grow in marshes and swamps? How long do basil plants typically live when grown indoors? What familiar stable was once thought to be poisonous? What is the coco bean? Would you expect to find more stomata in a desert cactus or a water lily? What kind of deciduous shrub has red berries? How much is a peace rose bush? Why did your verbena stop blooming? How old can a kelp be? Where can you find an actual map of the last expected frost for an area? How can I successfully transplant a lucky bamboo plant to ensure its continued growth and health? What is the English name of rajnigandha flower? How much water does marigolds need? Will lime kill weeds? How can I identify a fruitless mulberry tree? How can I successfully root plants in water from a cutting? Do zebras eat at night or day? Why are my calathea leaves turning yellow? Can my rabbit safely eat blueberries?