They are clearly different cultivars. In spring you may notice little masses of sticky, frothy bubbles, on various plants in your yard or garden. In the past few months the plant has started to throw off sticky, sap-like … The best way to deal with Verticillium wilt is by getting rid of all the diseased plants and starting all over again by using new soil, new containers, and new rosemary plants. These white foam blobs are produced by the immatures, or nymphs, of spittlebugs, small insects related to aphids and other true bugs, in the order Hemiptera. It is approximately 24" tall and a bit leggy but continues to grow and has even given me a few blue blossoms this year. Spittlebugs seem to have a preference for rosemary. You have a problem: Plants are losing their leaves and failing to thrive. Pests: Rosemary is known to be a pest-resistant plant, but some insects can still land on this herb to live and reproduce. As spider mites feed on the precious chlorophyll (the stuff that makes a plant green, and allows photosynthesis to occur) plant cells become damaged. Email Save Comment 4. Mealy bugs are soft, white insects that suck the juices out of plants and multiply rapidly. If the rosemary is growing in a pot, remove the plant from its pot. If you see white stuff on plant leaves, it’s probably powdery mildew. White Slimy Sacks On Rosemary Bush Question From: L. Coleman - ARIZONA Q: I was trimming my rosemary bush...after trimming the growth sprigs I noticed (just inside top edge of the bush) were these small sized white slimy sacks hanging from the 'T' of the inner stems, texture was that of a … Rosemary Dripping "Sap" Answered by: Conrad Richter Question from: Cheryle Molberg Posted on: August 14, 2003 My rosemary plant is approximately 5 years old and has always been indoors. All of this causes incredible and unsightly damage to your houseplant. Hi tmm99 - I also have a sticky and a non-sitcky rosemary. The same is true of sage, another herb favored by the insect. Some small spider web-like clumps are appearing, as if little critters are making … If your rosemary has them, and the rosemary is located near the oregano, the spittlebug may have migrated. Neither has had a health problem and seem quite happy. I have these rosemary plants and this time of the yr. they get this white sticky stuff all over them and I thought this was normal until another plant close by now has gotten this-What is it-It is white and wet/sticky . Learn more about what powdery mildew is, how it develops, and what you can do to prevent it. The plant leaves will display a rough yellowing as they lose chlorophyll and cell walls are being punctured. Q: I have a four year old potted rosemary plant that is suddenly not doing very well. Remove as much soil as you can without damaging the roots. Upon closer examination, you find a white substance on the leaves. The non-sticky one is more upright. Inspect the plant daily after that. If you also are growing rosemary (Rosmarinus), check it to be sure the foam is not present on plants. Some life stages of the pests live in the soil. True to its name, this fungus covers plant leaves and stems with what looks like powdered sugar. Comments (4) ltcollins1949. This white material could be one of two things: mealy bugs or powdery leaf mildew. Follow. The sticky one likes to droop and cascade over a wall. So I assume they … Put it in a different pot with sterilized soil. What looks like powdered sugar a sticky and a non-sitcky rosemary this herb live! True to its name, this fungus covers plant leaves, it ’ s powdery... Leaves will display a rough yellowing as they lose chlorophyll and cell are... Herb favored by the insect much white sticky stuff on rosemary plant as you can do to prevent it pot, remove the plant its... 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