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Flowering (Flower Bulb) Bulbs, Corms, Roots and Rhizomes

No doubt, you have heard all the different terms for flowering bulbs, corms, roots and rhizomes, but do you know what they mean? Each term is a different way from which flowers grow, how they need planting and the type of flowers themselves. Before you can get that beautiful, colourful garden, you first need to take into consideration how much sunlight your plant will receive, whether or not it needs a lot of water or if it is a light watering flowering bulb, corm, root or rhizome. A little research before you plant means the better your finished product will look.


When it comes to planting flowers that sprout from a bulb, you need to know when to plant. Autumn flower bulbs such as tulips and daffodils need planting in the autumn so they can grow roots throughout the winter, then bloom in the spring. Cannas, dahlias, and calla lilies are spring planted bulbs, which means they grow roots during the summer months and bloom in the autumn.


Iris corms are very similar to bulbs but instead of having layers like an onion, it has a solid inside. Many of the wildflowers growing around the world start out as corms.

Tuberous Roots

Tuberous root flowers use specialised roots to store food that it uses up during the growing season. The roots cluster together and join the stem at the bottom. The stem part is what contains the growing point for the next year, so you continue to have lovely flowers year after year.


Most flower stems grow straight down into the soil, but rhizomes have stems that grow sideways along the surface of the dirt or just under it. Lily-of-the-valley and ginger are types of plants that fall under the rhizomes category.

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