} success: function(data) { Soil can be made more acidic by mulching with sphagnum peat, applying aluminum sulfate or using an acidifying fertilizer. $("#"+thisid).hide(); }); var mySplit = thisid.split("-"); } } var url = "/frogs/ajax/post_comment/"+pid+"/"; Since we have had very cold weather that may be your culprit. var thisid = $(this).attr('id'); Pale leaves can be caused by a number of problems: insects, disease or inappropriate growing conditions. Pinpointing the exact cause of your plant's pale leaves will take a bit of troubleshooting. You could do a couple of things - first fertilize as you suggested, also put compost around the plant with some composted manure, then mulch for the summer's hot weather. $.get('/frogs/ajax/print_comment.php', { pid: data} ).done(function(foo) { Overall, it doesn't look healthy, especially compared to the same plant on the other side of the yard, which has green leaves. Can you give me some suggestions? http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=263311, https://www.bartlett.com/resources/Plant-Health-Care-Recommendations-for-Pieris.pdf. $("#replyform-"+pid).hide(); First, the very hot summer last year and not enough water in its old location, second shock transplanting to a new location, or the pH could be off. This particular Pieris is creating an eyesore in my new landscaping. $("form.frog_reply_form").submit(function(e) { $("#show_answer_form").slideDown(); Terms of Service apply. Other possibility is lacebug infestation which causes leaves to turn yellow and then ghostly white. }, © 1972 - 2020 National Gardening Association, Times are presented in US Central Standard Time, Today's site banner is by Lucius93 and is called "Sempervivum tectorum". $(document).ready(function(){ Try feeding with an acid-based fertilizer (such as for rhodies or camellias), in amounts recommended on the label. Here is some additional info on Pieris: http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=263311 https://www.bartlett.com/resources/Plant-Health-Care-Recommendations-for-Pieris.pdf. url: url, Thank you. We have had a lot of rain, if the new site doesn't drain well, it could have rotting roots. Lacebug nymphs leave shiny, dark speckles of excrement there. Please contact us if you have further questions. type: "POST", Both of these products take a long time to be absorbed but will help attain a lower pH. Use these convenient icons to share this page on various social media platforms: You must be signed in before you can post questions or answers. Peat breaks down faster and also will assist with lowering the pH, but it does leach out as well. if ($(window).width() < 1025) { There are various reasons for yellowing leaves in the Pieris ‘forest flame’.It likes an acid soil so you need to feed it with a lime-hating plant food. function _ShowAnswerButton(pid) { } document.write(''); I will try all the things that you suggested. It also does poorly in very cold weather and high winds. Composted manure will help the plant produce new leaves. There could be several reasons your plant has yellow leaves. However, if your Pieris japonica's leaves turn yellow, it is a sign that something is wrong. Dig one up and check. }); If your Pieris japonica is located in full sun, or if it is planted in soggy soil, you may need to move the plant to a better location. Soak and replant if this proves to be the case. I have a "Pieris Japonica" planted in partial shade. Poor flowering. While this is not as accurate as having a soil test done, it will give you an indication of what the pH in your current soil is. I would like to hard prune it back to the ground, but need advice about whether that is safe to do and, if so, what is the best way to do it and I would also like any other advice that you can provide. e.preventDefault(); We have had a lot of rain, if the new site doesn't drain well, it could have rotting roots. Pieris Japonica is a low growing flowering shrub with a variety of cultivars. … The leaves are yellowing and I think it apparently needs Rhododendron fertilizer, but I want to clean it up first. function Frog_Reply(pid) { High levels of alkali in soil can diminish the amount of chlorophyll in the plant,resulting in pale,yellowish leaves.It should also be planted in a moist well-drained soil, and as it is not completely hardy, make sure that it is protected from cold winter winds. data: $("#"+thisid).serialize(), Slow growth. You can add sawdust (purchase at feed stores that sell it for animal cages) and elemental sulfur (also sold at feed stores). Leaves that turn yellow between the veins may be a sign of alkaline soil. Then continue to fertilize per the directions on your fertilizer box/bag over the summer. Some of these varieties have naturally pale leaves. } (adsbygoogle = window.adsbygoogle || []).push({}); if ($(window).width() > 1024) { Leaves turn yellow and it generally looks sick. First, the very hot summer last year and not enough water in its old location, second shock transplanting to a new location, or the pH could be off. var pid = mySplit[1]; No vigor. Thank you Sheryl. Pieris japonica does not like full sun exposure, and grows best in partial shade conditions. Attached are 3 photos of the poor Pieris. If the foliage is yellowish, the soil conditions aren't quite right for it. This site is protected by reCAPTCHA and the Google A hard prune (if the plant is healthy) should not hurt the plant. Can't tell from the photo, but two most likely causes: dried out at the roots. }); « Return to the Garden Knowledgebase Homepage. $("#show_answer_button").hide(); Please note that I said a hard prune should not hurt the plant if it is healthy meaning no root rot or other disease. Also, while the yellow leaves are falling off, it also has many branches throughout that look congested. You can purchase pH kits at most nurseries. $("#replyform-"+pid).slideDown(); This established Pieris was transplanted in December 2018 from another area of the yard, and it is now almost mid-April. Pieris japonica prefers filtered sunlight or partial shade and acidic, well-draining but moisture retentive soil. }); The blooms are ready to be deadheaded, which is proving to be a lengthy task. There could be several reasons your plant has yellow leaves. 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