LANDSCAPE SPECIALISTS (copyr 2002-2006) ( use your browser's back arrow to return to Landscape Specialists Home Page or go to www.GoodFolksToMow.com ) Pacific Northwest - April Integrated Pest Management ( IPM ) Monitoring & Treatment for Lawn and Landscape: __________________________________ Spray Treatments for Shrubs and Tree's: Treatment may be needed for problems identified last year or after an inspection. Many problems require only thinning and pruning of damaged wood. Other problems are not serious enough to warrant treatment. Know what you are spraying for and when to spray. Below are listed key problems to look for now. Check the links on our Home Page for further information on least-toxic alternatives using Integrated Pest Management (IPM). An explanation for the symbols used below is located in our pamphlet entitled "IPM Index", accessible through our home page. _______________________________________________ APRIL --- IPM Alert: Monitor or take action for the following problems: _______________________________________________ [P/] LEAF BLIGHT (FUNGUS) [/T] ARBORVITAE [/S] LEAF: BROWN SPOTS (upper surface), BR, BL, SCORCHED [M/] MAY, JUN, APR: [/S] LEAF: (BR or BL FRB) [M/] JUN: [/S] LEAF: DROP, DEAD, GRAY, PEELED [M/]: OCT: [/A] MAY, JUN, APR: BCS [/A] OCT: STREptomyisin, BCS [A/] ANTC: TPRU, RPRU (mostly cosmetic) [A/] ANTC: CULTURAL improve AIR circulation especially affects lower branches, juvenile foliage do not overfertilize could resemble dog urine damage - db [P/] APHID [/T] MANY [/S] LEAF: HONEYDEW, CAST, PUCKER, STUNT [/M] MAY, JUN, APR: [/M] AUG, SEP, JUL: [A/] ANTC, APR:, JUL: HOSE, SOAP, NEEM [A/] FEB, APR, MAR: DORM [A/] PARA, PRED [/P] LEAFROLLER (CATERPILLAR) [/T] MAPLE, ROSE, HAWTHORN, DOGWOOD, LILAC, RHODY, PRUNUS, MANY [/S] LEAF: WEBBED, ROLLED [/M] APR: JUL: [/A] ANTC: BT, NEEM, RPRUN, MECH (squash shelters) [/A] PRED, PARA [/P] APPLE SCAB (FUNGUS) [/T] APPLE, FIRETHORN, COTONEASTER, MOUNTAIN-ASH [/S] LEAF, FRUIT, FLOWER: SPOTS, FUNGUS, DEFORM, DROP [/M] MAY, JUN, APR: [/M] AUG, SEP, JUL: leaf drop [/A] ANTC: LIME-SULFUR, NEEM [/P] ROOT WEEVIL [/T] HEATH, HEATHER, RHODY, PHOTINIA [/S] TRUNK or STEM @ SOIL-line: CHEWED [/S] LEAF: NOTCHED MARGIN [/M] APR: [/A] APR: NEMATODES, TANGLEFOOT, NEEM? [/P] RUST (FUNGUS) [/T] INCENSE-CEDAR, ROSE family, PRUNUS, MOUNTAIN-ASH, OTHER [/S] LEAF: RED BR FUNGUS & FRB, DEFORM [/S] BRANCH: BROOM [/M] ANTC, APR: [/A] ANTC: RPRUNE brooms [/A] ANTC, APR: LIME-SULFUR, NEEM [/P] LEAFMINER [/T] DCID, MANY, LILAC, ASH, EUONYMUS, DEUTZIA, PRIVET [/S] LEAF: MINED, BLOT, PUCK, ROLL, EGGS, COCOON, DROP [/M] ANTC, APR: MAY: [/A] APR: MAY: PSO, NEEM [/A] ANTC: MECH remove infested leaves [/A] ANTC: CULT RAKE debris [/P] PSEUDOMONAS SYRINGAE (BACTERIAL LEAF SPOT) [/T] LILAC, PRUNUS, MAPLE, PEAR, OTHERS [/S] LEAF: BLACKEN, BROWN SPOTS, PUCKER, BLOTCH, DIEBACK [/S] BRANCH: CANKER, GSF, DIEBACK [/M] ANTC, APR: [/A] ANTC: RPRUN, TPRUN [/A] late SEP: & APR: MICROCOP, NEEM?* apply after pruning* microcop has not proven effective in w. wa. neem does seem to work - db [/P] TAR SPOTS (fungus) [/T] MAPLE [/S] LEAF: (YE BR BLOTCHES), DROP, TARBALLS [/M] APR, JULY: [/A] MECH RAKE debris [/A] APR: MICROCOP [/A] ANTC: NEEM? [/P] LEAF SPOT (FUNGUS) [/T] CHERRY, LAUREL (not usually fl. plum) [/S] LEAF: BROWN, SPOTS, SHOTHOLE, DROP, FRB [/S] TWIG: CANKER, GUM, DIEBACK, FLAGS [/M] ANTC, APR: [/A] ANTC: CULT RAKE debris, SULFUR, NEEM? [/P] SHOTHOLE (FUNGUS) [/T] PRUNUS, PEACH, APRICOT, (not usually cherry, plum) [/S] LEAF: BROWN, SPOTS, SHOTHOLE, DROP, BLOTCH [/M] ANTC, APR: [/A] ANTC: CULT RAKE debris, NEEM? [/P] ERIOPHYID MITES [/T] SCOTCH PINE, LODGEPOLE PINE [/S] LEAF: DEFORMED, STUNTED, DISCOLOR (not twisted), DROP [/M] APR: [/A] APR: PSO (mixed with sevin), NEEM? [/P] PINE BARK ADELGID [/T] PINE, SPRUCE [/S] LEAF: YELLOW, STUNTED, DEAD, WOOLY-CLUMPS [/M] APR: [/A] APR: HOSE [/P] PINE NEEDLE SCALE [/T] PINE, DFIR, SPRUCE [/S] LEAF: BROWN, SCALES [/S] TWIGS & BRANCHES: DEAD, STUNTED [/M] APR: [/A] MAY: SOAP, PARA [/A] APR; PSO [/P] LOPHODERMIUM NEEDLE CAST [/T] PINE, esp. SCOTS PINE [/S] LEAF: YELLOW SPOTS, BROWN, DEAD, DROP, BLACK FRB [/] TWIG: DIEBACK, STUNTED (esp lower branches) [/M] ANTC, APR: [/A] ANTC: TPRUN, CULT RAKE chemical control needed if new growth is infected [/P] WHITE PINE BLISTER RUST (FUNGUS) [/T] PINE, 5 needle (alt host GOOSEBERRY, CURRANT) [/S] BRANCHES & TRUNK: CANKERS, PITCH, BUMPS (in canker) DIEBACK, FLAGGING, (YE RE FRB) [/M] ANTC, APR: [/A] ANTC: NEEM?, RPRUNE infected & lower branches [/P] LEAF AND FLOWER GALL (FUNGUS) [/T] RHODY [/S] NEW LEAF: GALL (AZALEA, WH FILM) THICKEN, YELLOW, WHITE (rhody) [/M] ANTC, APR: [/A] ANTC, APR; RPRUNE, TPRUN, NEEM? [/A] APR: MICROCOP [/P] LEAF SPOT (FUNGUS) [/T] RHODY [/S] LEAF (usually MARGIN & TIP): BROWN, SPOTS, BLOTCH, FRB borders may be darker [/M] ANTC, APR: [/A] ANTC: CULT RAKE, NEEM? [/P] POWDERY MILDEW [/T] RHODY (special symtoms, rhodendendron only) [/S] LEAF: RED AND BROWN SPOTS & BLOTCHES, STUNTED, DROP [/M] ANTC, APR: [/A] APR: LIME-SULFUR NEEM* [/A] ANTC: TPRUN, HOSE don't overfert, overprune, overwater avoid dense shade [/P] ROSE MIDGE [/T] ROSE [/S] LEAF, BUD, TWIG: DEFORM, DEAD [/M] ANTC, APR: [/A] RPRUNE [/P] LEAFHOPPER [/T] ROSE, HAWTHORN, CHERRY, SPIREA, DOGWOOD, MAPLE, ELM, OTHER [/S] LEAF: WHITE STIPPLE, DROP, DEAD [/M] APR:, AUG: [/A] ANTC: LACEWING, NEEM [/P] ROSESLUG also BRISTLY ROSESLUG [/T] ROSE [/S] LEAF SKELETONIZED, SHOTHOLE [/M] APR:, JUL: (bristly) [/A] ANTC: HOSE, MECH, PRED?, PARA? [/P] BLACK SPOT (FUNGUS) [/T] ROSE [/S] LEAF: BLACK SPOTS, YELLOW, DROP, FRB [/M] APR: [/A] ANTC: TPRUN, SULFUR, NEEM? [/A] FEB: PRUNE infected canes [/A] APR: MICROCOP [/P] CANKER [/T] ROSE [/S] CANE: (SPOTS: YELLOW, RED, BROWN), FRB, DIEBACK [/M] APR: (often caused by pruning ) [/A] ANTC: RPRUNE cankered canes and destroy [/A] ANTC: CULT (make proper pruning cuts) [/P] CROWN GALL (cancer-like growth initiated by bacterial infection) [/T] DCDS, ROSE, MANY [/S] (TRUNK, CANE @ ROOT CROWN): GALLS [/S] PLANT: STUNTED, DEAD [/M] ANTC, APR: [/A] ANTC: REMOVE (plant over with grass) [/A] STRAIN 84 (pre-emergent) (avoid wounding) [/P] SPRUCE APHID [/T] SPRUCE [/S] LEAF (LOWER, INNER): YELLOW BLOTCH, HONEYDEW, BROWN, DROP [/M] JAN: (for presence of green aphid or prior damage) [/M] APR: (for damage, but probably too late to control) [/A] ANTC: HOSE?, RPRUN _____________________________ The following should be included in all routine monitoring programs [/P] RHIZOSPHAERA NEEDLE CAST [/T] SPRUCE, PINE, DFIR, FIR [/S] LEAF: YELLOW MOTTLE, BROWN, DROP,FRB (with small white caps) [/M] ANTC: [/A] ANTC: TPRUN, CULT (sanitation, air, partial sun) [/P] VERTICILLIUM WILT [/T] MANY DCID [/S] LEAF: WILT, DEAD, DROP, STUNTED, DISCOLORED, MARGIN BROWN [/S] CAMBRIUM: GREEN STREAKS, BROWN STREAKS if DEAD [/S] BRANCH: DEAD [/M] ANTC: [/A] ANTC: RPRUN [/A] ANTC: DESTROY if serious sterilize tools [/P] ARMILLARIA ROOT ROT (FUNGUS) [/T] MANY [/S] LEAF: BROWN, DROP [/S] (TWIG, BRANCH, CROWN): STUNTED, SICK [/S] (LOWER TRUNK @ INNER BARK, SOIL): WH FUNGAL SHEETS, GSF [/S] (LOWER TRUNK @ BARK, SOIL): BL FUNGAL STRANDS [/M] ANTC: [/A] ANTC: DESTROY [/A] MAR, FEB: BCS (3rd app) [A/] ANTC: CULTURAL improve AIR circulation especially affects lower branches, juvenile foliage do not overfertilize could resemble dog urine damage - db [/P] PHYTOPHTHORA ROOT ROT [/T] MANY [/S] LEAF: WILT, YELLOW, BROWN [/S] (LOWER TRUNK @ INNER BARK): BR STREAKED FUNGUS [/S] BRANCH: DIEBACK, BEETLE INFESTED, CANKER [/M] ANTC: [/A] ANTC: DESTROY [/P] VERTICILLIUM WILT [/T] MANY DCID [/S] LEAF: WILT, DEAD, DROP, STUNTED, DISCOLORED, MARGIN BROWN [/S] CAMBRIUM: GREEN STREAKS, BROWN STREAKS if DEAD [/S] BRANCH: DEAD [/M] ANTC: [/A] ANTC: RPRUN [/A] ANTC: DESTROY if serious ___________________________________________ copyr Landscape Specialists, 2002 - 2006