{"title":"Scale Insects","description":"\u003ch2\u003eHow to know it's scale\u003c\/h2\u003e\u003cp\u003eSmall immobile bumps along stems and leaf veins — brown, tan or grey, sometimes flat and shell-like, sometimes raised and waxy. They don't move, so people mistake them for part of the plant, or for a fungal spot. Soft scale leaves sticky honeydew and sooty mould; armored scale doesn't, which makes it even easier to miss.\u003c\/p\u003e\u003cp\u003eThe mobile stage is the crawler, and it's brief. Everything after that is a female sitting under a protective cover, feeding, which is precisely why sprays underperform: the cover is doing its job.\u003c\/p\u003e\u003ch2\u003eWhat eats them\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eRhyzobius lophanthae\u003c\/strong\u003e is a small dark lady beetle that specialises in armored scale. Both adults and larvae feed underneath the scale cover — they get to the insect the spray can't wet.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMontrouzieri\u003c\/strong\u003e (\u003cem\u003eCryptolaemus montrouzieri\u003c\/em\u003e) is best known for \u003ca href=\"\/collections\/mealybug-treatment\"\u003emealybugs\u003c\/a\u003e but also takes soft scale, and it's worth having if you have both, which is common.\u003c\/p\u003e\u003ch2\u003eWhat to expect\u003c\/h2\u003e\u003cp\u003eScale is slow, and so is its control. Dead scale stays stuck to the plant — an empty shell looks identical to a live insect from across the room. Press one with a fingernail: if it's dry and hollow, that battle's over. Judge progress by whether new crawlers are appearing, not by whether the old bumps have fallen off.\u003c\/p\u003e\u003cp\u003eBoth beetles are warmth-loving and slow down in a cold room. Give them a stable, warm spot and time to find the colonies.\u003c\/p\u003e","products":[{"product_id":"rhyzobius-lophanthae-armored-scale-predator","title":"Rhyzobius lophanthae","description":"\u003cp\u003e\u003ci\u003eRhyzobius lophanthae\u003c\/i\u003e is a specialized, small black ladybird beetle that serves as the premier biological control for \u003cb\u003eArmored Scale\u003c\/b\u003e. Unlike many other predators that only target the \"crawler\" stage, \u003ci\u003eRhyzobius\u003c\/i\u003e is a powerhouse that feeds on all life stages of scale—including the tough, adult armored shells. If you are struggling with persistent scale on woody stems or tropical leaves, this beetle is your most effective natural solution.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\" class=\"mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eField Notes — \u003cem\u003eRhyzobius lophanthae\u003c\/em\u003e\n\u003c\/h3\u003e\n\u003cdiv dir=\"ltr\" class=\"overflow-x-auto w-full px-2 mb-6 print:overflow-x-visible\"\u003e\n\u003ctable class=\"min-w-full border-collapse text-sm leading-[1.7] whitespace-normal\"\u003e\n\u003cthead class=\"text-left\"\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\" class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\" class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\"\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eSpecies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cem\u003eRhyzobius lophanthae\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eCommon name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eScale destroyer, scale-eating lady beetle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003ePredatory beetle — Coccinellidae\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eNative to\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eAustralia. Long established in warm regions worldwide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eShips as\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eAdults\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eSold by\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eCount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e2–3mm. Small, dark, with a reddish-brown head and a fine covering of hairs. Doesn't read as a ladybug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eHunts\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eArmored scale — \u003cem\u003eDiaspididae\u003c\/em\u003e. Oleander scale, San Jose scale, cycad scale, false oleander scale, euonymus scale, tea scale, and others\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eEats opportunistically\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eSoft scale, mealybugs, occasionally other soft-bodied insects. Taken on encounter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eWon't touch\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eAphids, thrips, mites, whitefly, fungus gnats, anything in the soil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eTarget stage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eBoth. Adults chew through the scale cover to reach the insect beneath; larvae feed on eggs and crawlers under the cover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eHow it works\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eAdults and larvae both feed. A single adult consumes a substantial number of scale over its lifetime, and larvae develop entirely on scale — so the population compounds if hosts hold out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eOptimal temp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e70–85°F (21–29°C). Warm-loving, like \u003cem\u003eMontrouzieri\u003c\/em\u003e — activity drops off below 65°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eHumidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eModerate. No high-RH requirement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eLight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eNeeds daylight. Adults fly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eEgg to adult\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eRoughly 4–6 weeks depending on temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eAdult lifespan\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eSeveral weeks to a few months under good conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eEstablishes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eYes, in warm conditions with scale present. Reproduces indoors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eDeploy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eImmediately on arrival. Release directly onto infested plants at the scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eRelease timing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eEvening, onto moist foliage. Repeat in 2–3 weeks if scale pressure holds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eRefrigerate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eCompatible with\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003ePredatory mites, \u003cem\u003eStratiolaelaps scimitus\u003c\/em\u003e, beneficial nematodes, lacewings, \u003cem\u003eAphidius\u003c\/em\u003e, \u003cem\u003eCryptolaemus\u003c\/em\u003e, springtails, \u003cem\u003eDiglyphus\u003c\/em\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eKeep separate from\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eBroad-spectrum and systemic insecticides. Systemics move into the scale and reach the beetle. Yellow sticky cards catch adults — pull them at release\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eChemical interval\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eOne day after neem oil or insecticidal soap. Never with sulfur, at any dilution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eSafe around\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003ePets, children, plants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"FGMN Nursery","offers":[{"title":"X-Small — 1 Heavily Affected Plant — 10 Beetles","offer_id":47866864828658,"sku":"RHYZ-10","price":65.0,"currency_code":"USD","in_stock":true},{"title":"Small — Up to 5 Plants — 25 Beetles","offer_id":47866864861426,"sku":"RHYZ-25","price":85.0,"currency_code":"USD","in_stock":true},{"title":"Medium — Up to 10 Plants — 50 Beetles","offer_id":47866864894194,"sku":"RHYZ-50","price":135.0,"currency_code":"USD","in_stock":true},{"title":"Large — Up to 20 Plants — 100 Beetles","offer_id":47866864926962,"sku":"RHYZ-100","price":150.0,"currency_code":"USD","in_stock":true},{"title":"X-Large — Up to 50 Plants — 250 Beetles","offer_id":48750187413746,"sku":"RHYZ-250","price":175.0,"currency_code":"USD","in_stock":true},{"title":"2X-Large — Up to 100 Plants — 500 Beetles","offer_id":48750195572978,"sku":"RHYZ-500","price":240.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/8275\/3778\/files\/Rhyzobiuslophanthaescaletreatmentpredatoryinsect.png?v=1771021075"}],"url":"https:\/\/fgmnnursery.com\/collections\/scale-insects.oembed","provider":"FGMN Nursery","version":"1.0","type":"link"}