.post-entry ul, .post-entry li{margin: 1em 0;}.newgenbtn{display: block;text-align: center;border: 2px solid #fff;padding: 20px 0px;font-weight: 700;font-size: 1.1rem;font-family: 'Oxygen', sans-serif, Arial, Helvetica;color: #fff;text-decoration: none;position:relative;}.newgenbtn.inblock{padding: 20px;display: inline-block;}.lillinkicon{position: absolute;width: 20px;height: 20px;background: url(https://questions.gardeningknowhow.com/wp-content/themes/yourgardenxq/imgs/greysocials.png) -442px 0px no-repeat;top: 5px;right: 5px;}.newgenbtn:hover .lillinkicon{opacity: 0.7;}a.wpr_genpost_readmore {color:#3a6d25;font-family: 'Seaweed Script', cursive;font-size: 1.25rem;text-decoration: none;}.readmorearrow{content: " ";border-left: 7px solid #3a6d25;border-top: 4px solid transparent;border-bottom: 4px solid transparent;width: 0;height: 0;position: relative;display: inline-block;margin-left: 5px;}.required{color: #a00;}header #topsearchbar.floater td.gsc-input{display:block;}#main-art{margin-bottom: 30px;}#joinusbluebox{background: #338dc9;position: relative;display:-ms-flexbox;display: flex;overflow: hidden;color: #fff;justify-content: center;align-items: center;flex-wrap: wrap;min-height: 97px;padding-top: 20px;padding-bottom: 20px;}#joinusbluebox .newsletterformform{flex: 0 1 100%;}#joinusbluebox .responsemsg{flex: 0 1 100%;justify-content:center;}#joinusbluebox .watermark{opacity: 1;z-index: 1;}#joinusbluebox .seaweed{font-size: 2.2rem;}#joinusbluebox .joinconvince{font-size: 1.25rem;margin: 0px 20px 0px 10px;z-index: 1;}#joinusbluebox .newsletterinput{margin-bottom: 7px;margin-top: 7px;z-index: 1;}#joinusbluebox .newsletterbutton{z-index: 1;}#gomodal{display:none;}#genmodal{box-shadow: 0 0 20px #111;-moz-box-shadow: 0 0 20px #111;-webkit-box-shadow: 0 0 20px #111;display:none;}.messagemodal{display: none;position: fixed;z-index: 1;left: 0;top: 0;width: 100%;height: 100%;overflow: auto;background-color: rgba(119, 119, 119, 0.7);z-index:25;}.modalcontent{background-color: #fefefe;margin: 35% auto;padding: 20px;border: 3px solid rgba(0, 0, 0, 0.7);width: 90%;font-size:1.3rem;text-align:center;}.closemodal{color: #fff;font-size: 1rem;background:#79a642;text-align:center;width: 150px;display: block;padding: 7px 0px;margin: 20px auto;cursor: pointer;}.errorsubmit{padding: 10px;background: #F8FFD1;}.errorsubmit li{color: #FF1C00;font-size:1.2rem;}footer{background: #338dc9;color #fff;border-top: 1px solid #fff;overflow: hidden;color: #fff;position:relative;}footer #footer-wrapper {margin-top: 45px;}footer #footer-wrapper .copyright{margin-top: 30px;position:relative;z-index:2;left:20px}footer .liner{border-top: 2px solid #fcaf1b;margin-bottom: 5px;display: inline-block;width: 100%;clear: both;height: 1px;}footer #footerlogo{background: #79a642;text-align: center;border: 2px solid #fff;padding: 30px;margin-bottom: 10px;}footer .othersites .blgbtn{margin-bottom: 10px;}footer .othersites .newgenbtn.blg{background: #a69242}footer h5{color: #fff;margin-top: 0px;font-weight: 700;font-size: 1.3rem;}footer ul.footer-menu{margin: 0px;padding: 0px;list-style-type: none;}footer ul.footer-menu li{display: block;margin-bottom: 30px;}footer ul.footer-menu li a{color:#fff;font-size: 1.1rem;text-decoration: none;border-bottom: 1px solid #fff;font-weight: 100;padding: 4px 0px;display: inline;}footer ul.footer-menu li a:hover{opacity: 0.7;}footer #footnewsltr{margin-top: 30px;margin-bottom: 40px;}footer .newsletterinput{margin-bottom: 7px;}footer .newslettersubmit{background: rgba(250, 255, 83, 0.75);color: #fff;border: 1px solid #fff;font-size: .9rem;height:42px;width: 100%;cursor: pointer;}footer .footersocials{text-align: center;}footer .logowatermark{position: absolute;bottom: 0px;right: 0px;background: url(https://questions.gardeningknowhow.com/wp-content/themes/yourgardenxq/imgs/homegraphics.png) -445px 0px no-repeat;width: 557px;height: 464px;z-index: 0;}#bounce{position: fixed;top: 0;left: 0;width: 100%;height: 100%;color: #fff;z-index:5}#bounce .underlay{width: 100%;height: 100%;position: absolute;top: 0;left: 0;background-color:rgba(0,0,0,0.5);cursor: pointer;-webkit-animation: fadein 0.5s;animation: fadein 0.5s;}#bounce .modalflex{display:-ms-flexbox;display: flex;justify-content: center;align-items: center;position: absolute;bottom: 0;left: 0;right: 0;top: 0;}#bounce .modal{width: 100%;max-width: 600px;background-color: #338dc9;z-index: 1;position: relative;margin: auto;-webkit-animation: popin 0.3s;animation: popin 0.3s;padding: 15px;}#bounce .watermark, #joinusbluebox .watermark{position: absolute;top: 0px;right: 0px;background: url(https://questions.gardeningknowhow.com/wp-content/themes/yourgardenxq/imgs/homegraphics.png) 0 0 no-repeat;width: 140px;height: 140px;background-position: 0px 0px;opacity: 0.2;}#bounce .newsletterbutton{padding-left: 3px;}#bounce .newsletterinput{padding-right: 3px;}#bounce .newsletterform{margin-bottom: 7px;}#bounce .newslettersubmit, #joinusbluebox .newslettersubmit{background: transparent;color: #fff;border: 1px solid #fff;font-size: .9rem;height: 42px;width: 100%;cursor: pointer;}#bounce .modalclose{font-family: 'Oxygen', sans-serif, Arial, Helvetica;cursor: pointer;position:relative;margin-top: -10px;right: -8px;font-size: .95rem;z-index: 3;float: right;font-weight: 700;}#bounce .signupwords{display: block;width: 100%;text-align: center;display:flex;justify-content:center;}#bounce .modaltitle{text-align: right;}#bounce .seaweed{font-size: 2.2rem;min-width: 118px;}#bounce .joinconvince{font-size: 1.23rem;position:relative;margin-left: 7px;top: 9px;}#bounce .responsemsg{text-align: center;margin-bottom: 10px;}#homesidelearn{background: url(https://questions.gardeningknowhow.com/wp-content/themes/yourgardenxq/imgs/farmerfaces.jpg) 0 0 no-repeat;background-size: cover;color: #fff;padding: 30px 0px;text-align:center;}#homesidelearn .learninbox {max-width: 70%;margin: 0px auto;}#homesidelearn .insideit{background: rgba(48, 81, 0, 0.7);}#homesidelearn .insideit p{margin-top: -17px;}#homesidelearn .tilte{position: relative;top: -17px;}#abovefooterblock{width: 100%;overflow: hidden;background: url(https://questions.gardeningknowhow.com/wp-content/themes/yourgardenxq/imgs/speckledbackorange.jpg) 0 0 repeat;padding: 20px 0;}.faceandlogo{position: relative;margin-right: 20px;float: left;width: 110px;height: 110px;}.circlelogo{position: absolute;width: 50px;height: 50px;background: url(https://questions.gardeningknowhow.com/wp-content/themes/yourgardenxq/imgs/homegraphics.png) -347px -417px no-repeat;bottom: -15px;left: 0px;}.footorangecontent{align-items: center;}.footexpertbutton{background: #338dc9;color: white;padding: 10px 15px;font-size: 23px;}.footknowgardening h2{color: #fff;margin-left: 20px;}.facelogomobile{display: flex;justify-content: center;flex-flow: wrap;}.footclickknow{text-align: center;}body.single-post h1, body.page h1{font-size:2.4rem}body.single-post h2, body.page h2{font-size:1.8rem}body.single-post h3, body.page h3{font-size:1.65rem;}.printerbutn {background: url(https://questions.gardeningknowhow.com/wp-content/themes/yourgardenxq/imgs/greysocials.png) -492px 0px no-repeat;width: 32px;height: 29px;display: inline-block;margin-right: 10px;}body.single #share-articles{margin: 20px 0px;}body.single #share-articles .sharehead{font-size: 1.5rem;margin-bottom: 20px;line-height: 1.4;color: #3a6d25;}body.single #asharedbox .sharebtns{margin-left: -20px;}.shared-counts-wrap.style-icon .shared-counts-button .shared-counts-icon{width: 50px;height: 33px;}.shared-counts-wrap.style-icon .shared-counts-button .shared-counts-icon svg {fill: #fcaf1b;width: 33px;height: 33px;}.lookingmore{display: inline-block;clear: both;margin: 10px auto;width: 100%;padding: 20px;background: #f9f6e9;font-family: 'Oxygen', sans-serif, Arial, Helvetica;color: #595959;margin: 70px auto 50px auto;}.lookingmore .lookbig{display: inline;font-size: 1.35rem;margin-right: 10px;line-height: 2;}.lookingmore .looksmall{display: inline;}.lookingmore .lookclick{display: inline-block;float: none;width:100%;margin-top:20px;text-align:center;border: 3px solid #fcaf1b;padding: 7px 12px;color: #fcaf1b;}label.notblue{color: #333333;;}.answerheader{height:70px;display:flex;align-items:center;background:#f4f1f1;}.answerheader .theqaletters{top: -15px;}.answerheader .widget-title{color: #c1c2be;font-size: 1rem;}.single-post .answerheader .spaceforQA{width: calc(100% - 70px);}.answerheader .answerit{float:right;}.singleanswer hr{margin: 15px auto;background: #f4f1f1;}.whouser{text-align: center;}.userwho, .answereddate, .single-post .singleanswer{color: #82847e;}.userwho hr{background: #338dc9;margin: 5px;}.userwho .usrnnm{color: #305100;}.userwho .center{display: block;font-weight: 700;font-size: .75rem;color: #338dc9;}.singleanswer hr{margin: 15px auto;}#allcomments{background: #fbfaf9;}#theanswers{padding: 20px 20px 20px 0px;}.loginandprint{margin: 30px auto;}#answerq{width: 100%;display: inline-block;margin-top: 45px;}.answerqbox{background: #fbfaf9;padding: 20px;margin: 0px auto;width: 100%;}.stuffholdercenter{width: 100%;position:relative;}.answerqtext{float:left;width:100%;}.postanswer{color: #fff;padding: 10px 20px;background:#338dc9;float: none;cursor: pointer;display: inline-block;width: 100%;margin: 10px auto;text-align: center;}.subscribetopost{width:100%;display:inline-block;margin:12px auto;}#forohforpage .error h1, #nonefound .error h1{color: #305100;}#forohforpage .error .pseudosearchbtn, #nonefound .error .pseudosearchbtn{border:none;background: #79a642;color: #ffffff;cursor: pointer;width: 100%;height: 100%;display: flex;align-items: center;justify-content: center;}#forohforpage .error .clickforsearch, #nonefound .error .clickforsearch{height: 45px;margin-top: 20px;}.fromshortcode.form{margin-top: 50px;margin-left:-15px;margin-right:-15px;}.fromshortcode input{border-radius:0px;border:1px solid #efefef;margin:10px 0px;}.fromshortcode button{margin: 10px 0px;}.fromshortcode label span{display:inline-block;color:#ca0000;margin-left:5px;}.fromshortcode .newslettersubmit{display: block;width: 100%;-webkit-border-radius: 0px;border-radius: 0px;border: none;background: #79a642;color: #fff;font-size: 1.3rem;padding: 5px 0px;cursor: pointer;}@media (min-width: 576px){.modalcontent{width: 80%;margin: 15% auto;}.modalclose{width: 200px;}body.home #ghomewidgets ul{display:-ms-flexbox;display: flex;}body.home #ghomewidgets a.genposts_linktitle{padding-right: 5px;}body.home #ghomewidgets li{max-width: 100%;}}@media (min-width: 768px){#joinusbluebox .newsletterformform{flex: 0 1 auto;align-items: center;align-content: center;justify-content: center;}#joinusbluebox .newsletterinput{padding-right: 2px;margin-bottom: 0px;margin-top: 0px;}#joinusbluebox .newsletterbutton{padding-left: 2px;}.modalcontent{width: 70%;}.whouser{text-align: left;}.answerqtext{float:left;width:70%;}.postanswer{float:right;display:block;width:auto;margin:0px;}.lookingmore .lookclick{display: block;float: right;width:auto;margin-top:0px;}footer .othersites .newgenbtn{font-size: 1rem;}footer .othersites .blgbtn{padding-right: 3px;margin-bottom: 0px;}footer .othersites .quabtn{padding-left: 3px;}footer ul.footer-menu li{margin-bottom: 12px;}footer ul.footer-menu li a{padding: 0px;}footer .newsletterinput{padding-right:2px;margin-bottom: 0px;}footer .newsletterbutton{padding-left: 2px;}footer .footersocials{text-align: left;}body.home #ghomewidgets ul{display: block;}body.home #ghomewidgets a.genposts_linktitle{padding-right: 0px;}#sticky-footer{z-index: 214 !important;}#forohforpage .error .clickforsearch{height: 100%;margin-top: 0px;}}@media (min-width: 992px){.modalcontent{width: 60%;}body.home #ghomewidgets .imconti img{max-width: 85px;}.facelogomobile{display: block;}.footclickknow{text-align:left;}}@media (min-width: 1200px){.modalcontent{width: 50%;}body.archive #joinusbluebox .joinconvince{margin-bottom: 0px;}}

What's your question? Ask

Hyacinth Plant

Q.Romaine Lettuce

Anonymous added on July 7, 2012 | Answered

Overnight my beautiful Romaine lettuce has developed a brownish/black crust right in middle/top of the head. Is it a pest, a disease, or what?

Nikki

Certified GKH Gardening Expert

Answered on July 9, 2012

It is likely the result of a pest or fungus of some kind. We have found neem oil to be very effective against almost all harmful pests and fungal problems in the garden. This article has more information:
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

Was this answer useful?

Printer Friendly Version

You must be logged into your account to answer a question.

If you don't have an account sign up for an account now.

Looking for more?

here are more questions about...

Hyacinth Plant

Join Us - Sign up to get all the latest gardening tips!

Do you know a lot about gardening?
Become a GKH Gardening Expert

Learn More

What's your question? Ask

Q.Romaine Lettuce

Do you know a lot about gardening?Become a GKH Gardening Expert

Do you know a lot about gardening?
Become a GKH Gardening Expert