{"id":231328,"date":"2024-01-31T22:19:40","date_gmt":"2024-01-31T22:19:40","guid":{"rendered":"https:\/\/soxandfreeman.com\/?p=231328"},"modified":"2024-04-06T08:55:49","modified_gmt":"2024-04-06T08:55:49","slug":"crepe-myrtle-bark-scale","status":"publish","type":"post","link":"https:\/\/soxandfreeman.com\/blogs\/crepe-myrtle-bark-scale\/","title":{"rendered":"Crepe Myrtle Bark Scale"},"content":{"rendered":"

[et_pb_section fb_built=”1″ admin_label=”Hero Section” _builder_version=”4.24.2″ use_background_color_gradient=”on” background_color_gradient_direction=”90deg” background_color_gradient_stops=”rgba(244,240,233,0.83) 69%|rgba(244,240,233,0.11) 100%” background_color_gradient_overlays_image=”on” background_color_gradient_start=”rgba(244,240,233,0.9)” background_color_gradient_start_position=”30%” background_color_gradient_end=”rgba(244,240,233,0)” background_image=”https:\/\/soxandfreeman.com\/wp-content\/uploads\/2024\/01\/crepe-myrtle-bark-scale-tree-care-removal-certified-columbia-sc.jpg” background_position=”top_center” background_vertical_offset=”33%” custom_margin=”|||” custom_padding=”119px|0px|119px|0px” global_colors_info=”{}”][et_pb_row custom_padding_last_edited=”off|desktop” admin_label=”Hero Area” _builder_version=”4.16″ custom_padding=”27px|0px|0px|0px” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text admin_label=”Hero Title” _builder_version=”4.24.0″ text_font=”Playfair Display||||||||” header_font=”|600|||||||” header_font_size=”80px” header_letter_spacing=”-3px” header_line_height=”1.1em” custom_margin=”||0px|” custom_padding=”|||” animation_direction=”left” text_font_size_last_edited=”off|desktop” header_font_size_tablet=”” header_font_size_phone=”60px” header_font_size_last_edited=”on|phone” global_colors_info=”{}”]<\/p>\n

What is wrong with my Crepe Myrtles?<\/h1>\n

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If you\u2019re not asking about something related to giant knotty growths in the middle of the stems from over pruning, I would venture to guess that you have noticed your Crepe Myrtles are turning black, have begun to develop white spots or bumps, and are dropping an unreasonably gross, sticky mess on everything beneath them.<\/p>\n

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Does it look something like this?<\/h2>\n

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For the sake of the discussion, let\u2019s ignore the horrible pruning that led to the knots and sprouting growth here and focus on the black sooty mold beginning to move down the stems from the area around the knots.<\/p>\n

That\u2019s Crepe Myrtle Bark Scale. Let\u2019s take a closer look at exactly what is going on here.<\/p>\n

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Scale insects are a diverse species of sap sucking insects. There are about 8,000 different known species of scale insect and they come in a variety of sizes, colors, saps of preference, etc. Their name is derived from the scale, or shell-like, waxy coating that envelops them to the plant and allows them to cling on and do their damage.<\/p>\n

They are further categorized by the type of shell they develop, either as a soft scale with a thin protective layer surrounding them or \u201carmored\u201d meaning they develop a dense scale shell that makes them harder to control. The protocol for handling scale insects predominantly depends on what kind of shell is protecting them.<\/p>\n

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The first arrow here shows Black Sooty Mold from excessive amount of honeydew.<\/p>\n

The second arrow here points to white dots that are the scale insect causing the problems.<\/p>\n

” content_phone=”<\/p>\n

The first arrow here shows Black Sooty Mold from excessive amount of honeydew.<\/p>\n

The second arrow here points to white dots that are the scale insect causing the problems.<\/p>\n

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The first arrow here shows Black Sooty Mold from excessive amount of honeydew.<\/p>\n

The second arrow here points to white dots that are the scale insect causing the problems.<\/p>\n

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So what do I do about Crepe Myrtle Bark Scale?<\/h2>\n

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I\u2019m glad you asked.<\/p>\n

Crepe Myrtle Bark Scale will generally go through 2-4 generations per year, meaning over the course of the common active period for the insects during the year they can be born and reproduce up to four familial generations. If these scale insects were human, that would mean your grandmother was born in February, then birthed your Mom in late May, then you would be born in September and have a child before the end of the year. That\u2019s how fast these insects can reproduce.<\/p>\n

The treatment protocol depends on when they end up on your plant, or at least when you notice them.<\/p>\n

If the infestation is caught early in the year, between March through June, the treatment protocol will involve a systemic soil drenching around the tree with a chemical insecticide called dinotefuran. When dinotefuran is applied to the soil, it turns the tree itself into an insect trap. A neonicotinoid, it embeds itself in the plant and as the insects continue to suck on the sap, it will attach itself to the bug\u2019s central nervous system, causing any number of horrible sounding effects before killing the bug from the inside in a matter of hours. (Seriously, don\u2019t Google what it does to the bug, it might make you sympathetic but will definitely help explain the reasoning behind applicator certification and licensing to ensure safety with chemicals like these.)<\/p>\n

The systemic soil drench approach is good between (approx.) March after the foliage begins to bud and June, just before it gets too hot and the chemical loses efficacy (anything over 80 degrees and dinotefuran is a non-starter). Once the temperatures creep above 80, which they often do even earlier than June if you are in the Southeast where there are more Crepe Myrtles than people in some cities, treatment becomes a little more cumbersome. If you catch the infestation after the temperatures throw the systemic drench protocol out the window, it doesn\u2019t mean there\u2019s nothing you can do about the problem even if it means it\u2019s going to take a bit more time to fully address it.<\/p>\n

Later in the year, from those still comfortable days of the early Summer heat through the close of winter, you have a few options that can help curb the spread and growth of the infestation, but not really anything that is an overall solution at all. From Summer through Late Fall, the best solution is an insect growth regulator. It doesn\u2019t do anything about the existing bugs, but it keeps their damage and the mess to a minimum. This is applied via a canopy spray. If you don\u2019t catch it until you\u2019ve moved into the colder months, the best option is an alternative canopy spray of oil to try to slow a particularly heavy infestation from spreading over the cold months. With either of these canopy spray options, the only solution is to use them to slow the spread until Spring when you can apply the systemic soil drench at the appropriate time for maximum efficacy.<\/p>\n

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Isn\u2019t that a lot of work for a Crepe Myrtle?<\/h2>\n

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I\u2019m fairly certain you wouldn\u2019t read all of this about Crepe Myrtle Bark Scale and the treatment options if that\u2019s how you felt about the trees themselves, but this conclusion needed a header and that is an actual question I\u2019ve been asked by customers, so it felt right. If an Oak gets Ambrosia Beetles you would want to treat for that. If a Pine has Pine Beetles you would prefer to try to treat if you could rather than lose a tree unnecessarily, right?<\/p>\n

Both of those insects lead to far more irreversible damage and subsequent premature tree death than Crepe Myrtle Bark Scale. For the most part, Crepe Myrtle Bark Scale is just unsightly and makes a mess. Extreme infestations often cap out at stem death but not whole trees.<\/p>\n

So the answer is\u2026no. With proper pruning and maintenance, Crepe Myrtles are beautiful trees that offer a lot to our landscaping and the whole aesthetic of the Southeastern Region in particular. And since it has probably been a while since you\u2019ve seen the splendor of what a Crepe Myrtle is capable of being with that proper pruning and maintenance, we will close with a few photos of the magnificence that these underappreciated trees can bring to a landscape design.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.24.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.24.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_divider _builder_version=”4.24.2″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_divider][et_pb_post_nav show_prev=”off” next_text=”Next Blog: In The Pines” _builder_version=”4.24.2″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_post_nav][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ admin_label=”Footer Section” _builder_version=”4.21.0″ background_color=”#f7efe9″ custom_padding=”||||false|false” global_module=”230895″ saved_tabs=”all” global_colors_info=”{}”][et_pb_row column_structure=”1_3,2_3″ admin_label=”Footer Area” _builder_version=”4.21.0″ global_colors_info=”{}”][et_pb_column type=”1_3″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text admin_label=”Title” _builder_version=”4.21.0″ text_font=”||||||||” header_font=”||||||||” header_2_font=”Alice|700|||||||” header_2_font_size=”36px” animation_style=”fold” animation_direction=”left” animation_intensity_fold=”20%” animation_starting_opacity=”100%” global_colors_info=”{}”]<\/p>\n

Reach Us<\/h2>\n

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3615 Phillips Street,
Columbia, South Carolina 29203<\/p>\n

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(803) 252-7294<\/a><\/p>\n

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