The blossoming of the Judas tree is a harbinger of spring. From March onwards, pink and purple, pea-like flowers open on stems, branches and trunks, bathing the entire tree in bright colours. While the garden is still sleeping, the flowers of the Judas tree remind us of the warmer days to come.
The native Judas tree, Canadian Cercis, grows in eastern forests, from New Jersey to West Virginia, Georgia to northern Florida and across the Mississippi Plain. For this reason, it is often considered one of the most shade-tolerant trees, able to grow in darker corners and still produce an abundance of flowers each year.
In their natural habitat, the Judas tree can grow up to 30 feet tall and 30 feet wide, but when grown as a single tree in backyards, the size and scale can be controlled. So if you’re looking for the best trees for small gardens, we have all the information you need on how to grow the Judas tree.
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How to Grow Judas Trees
The Judas tree belongs to the legume family. Fabaceaewhich is why the flowers resemble other flowers in this group, such as sweet peas. This native tree grows throughout much of the eastern and central United States, is prized by many, and is considered the state tree of Oklahoma.
What you should know about Judas trees
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“The Judas tree is one of our best native specimens,” says Sam NiemanGarden expert and founder of Grown by Design, a small landscape design company based in San Diego. “These trees can handle extended periods of drought and heat, but they are relatively resilient.”
“The Judas tree grows best in partially sunny locations with well-draining but moist soils and typically thrives in moist and cool northern zones, but can grow equally well in warmer climates, including here in California.”
Judas trees thrive best in U.S. hardiness zones 4 through 9, although this can vary depending on the specific variety. Most are completely hardy and can tolerate cold and frosty winters and moderately warm and sunny summers.
For an unusual shrub with dark foliage, try Cercis canadensis ‘Woodland Pansy’, available at Walmart. “The dark foliage is so unusual,” says Kathy JentzPlant expert and editor of Washington Gardener Magazine. “I have grown this plum leaf variety for many years and still enjoy seeing it in my garden.”
Kathy recommends planting ground covers under Judas trees, which “act as a living, green mulch, protecting the Judas tree’s roots during the summer and preserving moisture in the soil.”
Sam is a lifelong gardener whose passion for plants and nature is the driving force behind his extensive knowledge and expertise in horticulture. He attended San Diego State University and graduated with a degree in finance while simultaneously starting Grown by Design, a small landscape design business.
Kathy Jentz is editor and publisher of the award-winning Washington Gardener Magazine, based in Washington, DC. She is also editor of three plant society journals: Water Garden Journal, The Azalean, and Fanfare (Daylily Society Region 3).
Growing tips for Judas trees
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- Floor: Judas trees tolerate most soil conditions and adapt to slightly acidic or alkaline soils. Your tree will not do well in poorly drained or waterlogged soils and will appreciate consistent moisture. To improve soil health, apply mulch every fall or winter.
- Light: For best results, grow Judas trees in partial sun and partial shade. Although they can tolerate full sun, in southern regions and warmer zones it is best to give your tree some protection in the afternoons.
- Irrigation: Regular watering is important for your Judas tree, especially in the first year after planting. Watch the soil during spring and summer and prevent the roots from drying out. Your Judas tree will gradually become more drought resistant as it matures.
- Fertilize: “I recommend fertilizing Judas trees once or twice a year,” says Sam Niemann. More than that is probably unnecessary, and over-fertilizing is a common fertilization mistake to avoid. “Fertilize in the spring when the trees start to grow, and again in late summer or early fall if needed. I prefer a fertilizer specifically designed for trees.” Tree food skewers are available at Walmart.
- Clipping: “Judas trees don’t need to be pruned often,” Sam adds. “Prune as needed to maintain the health and shape of the tree, focusing on removing crossing, diseased or dead branches. This will depend on your tree species, as many tend to stay small and therefore don’t need frequent pruning.” Try these strong Felco pruning shears, available at Walmart, for your tree pruning tasks.
Cercis canadensis ‘Forest Pansy’ is an unusual tree with dark leaves that looks elegant and striking in any garden. The pink flowers open in early spring.
FAQ
Can I grow a Judas tree in a pot?
Yes, you can grow this native tree in a pot, which is a great option for those who have less outdoor space. It is best to use a variety that is smaller and more suitable for growing in containers. For example: Cercis canadensis ‘Ace of Hearts’ is a dwarf variety that doesn’t grow taller than 10 feet, making it an ideal choice for a container garden or smaller yard. As with all potted plants, remember to water regularly throughout the growing season.
Growing the native Judas tree is sure to add a special charm to your garden, especially in spring when the pink and purple flowers are a riot of color. In addition, early-rising pollinators will enjoy the nectar this tree provides. For more tree ideas and inspiration, check out our guide to growing a ginkgo tree.
