Spittlebugs are little insects that infest plants and make those blank , frothy masses you may have noticed on your rosemary plant . These bubbling masses , commonly bonk as “ spit , ” can also be found on other plants like salvia , lilac-colored , and many others .

Inside these foamy flock , you will find the unripe spittlebug , which are the nymphs of the adult spittlebugs . These nymphs use their mouthparts to pierce the plant tissue paper and suck out the sap . As they feed , they egest a sugary substance known as honeydew , which flux with air and their own secretions to create the frothy mass that circumvent them .

The purpose of this frothy mass is to provide protection for the nymphs from predator , uttermost temperature , and dry out out . It also helps them camouflage and remain enshroud from possible threats . The froth acts as insulant , maintain the nymph moist and protect them from the sun ’s rays .

While the presence of spittle insect and their scintillating sight may seem concerning , they are mostly not harmful to the overall health of the industrial plant . In fact , most plague are more of an aesthetic issue rather than a serious terror to the plant ’s well - being .

However , in some cases , labored infestations of spittlebugs can cause stunted growing or yellowing of the affected plant . If you notice these symptom , it may be necessary to take natural action to control the universe of spittle insect .

Here are a few methods you may sample to manage spittlebug :

1 . Physical Removal : If the plague is localized , you may manually polish off the foamy masses from the flora by gently spray them off with a stream of water or cautiously pass over them aside . Be sure to throw away of the affected works fabric to prevent reinfestation .

2 . Natural marauder : boost beneficial worm , such as ladybugs or lacewings , can help ensure spittlebug populations . These rude predators fee on the nymphs and help keep their numbers in impediment .

3 . Pruning : If the infestation is limited to specific limb or stems , you may lop and throw out the affected industrial plant role . This can avail forbid the spittle insect from spread to other areas of the industrial plant .

It ’s important to note that while chemical insect powder are available for spittlebug control , they are more often than not not recommend as they can harm good insects and disrupt the natural balance in your garden .

The white , frothy masses you see on your rosemary plant life are due to spittlebug . While they may be unsightly , they are typically not harmful to the overall wellness of the plant life . If necessary , you may try forcible remotion , boost natural predators , prune affected expanse , or apply insecticidal soap to contend spittlebug plague .

Caroline Bates