In early summer, swamp azalea produces long-tubed white flowers with a pink tinge and clove-like smell. Just wait for new growth in the spring. pH is the measured alkalinity or acidity of a soil. The leaves of some azalea varieties often turn purple, red or yellow in the winter. I use my coffee grounds like I do our bunny’s manure…simply spreadin it around my planting beds as mulch. It can produce leaves that are smaller than normal or that turn yellow … However, if this is affecting more than one plant or a large amount of foliage, it could signal a problem – like a nutrient deficiency or a drainage issue. Hey Linda…glad the info we provided helped. Thanks for reaching out Betty and good luck! Azalea blossoms brighten the spring garden, blooming generously in areas of light shade. Soil pH is alkaline (Azaleas need acidic soil for Iron) Another potential cause of azaleas with yellow … Causes for Yellow Leaves on Azalea Plants. So what’s up? 5 Must-Have Shrubs with White Flowers…to Extend the Life of Your Garden, Quick & Easy Holiday Gift Embellishments & Décor – Bringing the Outside In →, https://redeemyourground.com/redeem-grounds-coffee-grounds/, http://forums.gardenweb.com/discussions/1730029/old-azaleas-dying-in-sections. Winter injury is commonly seen in the landscape and is a result of environmental factors. Swamp Azalea (Rhododendron viscosum) – A Hardy Sweet-Smelling Azalea. Fall leaf color is yellow to red. A: You’re not old enough to have a poor memory! All azaleas will have some leaf drop. This is happening to all of the plants. As long as the leaves on the tips of your azalea are green, the plant is healthy. They are more delicate than leaves produced in summer, so they are the first to drop when cold weather arrives. Yellowing leaves is normally an indication of stress. Excessive yellowing and loss of older leaves are the predominant symptoms on these azalea cultivars. The leaves of some evergreen azalea varieties also turn color in the fall. This year it is only a skeleton. They may be yellow, yellowish brown, red, dark red, or green flecked with yellowish or reddish brown. Was just wondering about that . I know that both are great added to your compost pile as well…and if I composted, I probably would too. The result: leaves and needles turning brown and dying. I hope this post has helped any of you who have ever wondered why are my azalea leaves turning yellow. Feb 25, 2016 - Ever wonder...Why are my azalea leaves turning yellow? Q. Azalea With Yellow Leaves - My azalea has been extremely healthy all summer but now has lots of leaves turning yellow and falling off. Rhododendrons, azaleas, and camellias are amongst our most spectacular flowering shrubs. Betty…I’m so sorry that I’m late in responding to you. The most common symptom of winter injury in rhododendrons/azaleas is leaves turning brown. This cycle is called winter burn, or desiccation and is mostly likely what caused your boxwoods/azalea to turn brown or yellowish this winter/early spring. – D. Thank you for the advice and pics which look exactly like my mature azaleas in my winter garden (Australia). Having a problem with 20 year old azaleas dying. Since I’m pretty much a self-taught landscape designer (i.e., I don’t have a degree with anything plant in it), I wanted to make sure that I was complete and accurate with my answer…so I reached out to my all-around-plant-guru-friend Holly Brooks from King Landscaping. Light pink and white azaleas turn yellow before their leaf shed, while darker flowering forms usually turn reddish shades. In the spring I always put my coffee grounds around the bush and this gives them a nice dose of nitrogen to start the season. Over the grey months of winter look out for the many gardens filled with azaleas, and their vibrantly coloured pink, mauve, orange and golden yellow flowers. Azalea growers struggle with leaf drop every year. Q. Azalea Spotting - I planted 5 gallon-sized azaleas last spring. Azaleas set their leaf buds in the fall…and the emergence of these buds prompts molting. You can apply a liquid fertilizer, such as Miracid. The soil may also be too alkaline. Notify me of follow-up comments by email. But since you mentioned that they are old, I’m thinking it might be due to fungus. And thanks for chiming in and letting me know about your azaleas in your winter garden. That’s what I have done w some of my azaleas, and have gotten a few more seasons out of them. Browse and purchase gardening books by Walter Reeves, plus select titles by other authors. Older leaves may turn red on these cultivars in late summer. You see…like us, as azaleas age their immune systems can weaken…making them more susceptible to soil borne fungus. W some of my azaleas have turned yellow I use my coffee grounds like I do our ’! 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