garden vegetable pests & diseases how to grow a healthy ... · care of your garden plants...
TRANSCRIPT
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Presented by: Carolyn Kinnon
Garden Vegetable Pests & Diseases
How to Grow a Healthy Salsa Garden
© 2014 Regents of the University of California
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The majority of contaminates entering San Diego
watersheds come from residential properties.
IntegratedPestManagement!© 2014 Regents of the University of California
The Solution?
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IntegratedPestManagement
• Scien'ficallybased• Effec'veforthelongterm• Reducesoreveneliminatestheneedforpes'cides• Saves'meandmoney
U'lizesseveralstrategiesforpestmanagementratherthanrelyingononlyone!
© 2014 Regents of the University of California
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Proper Planting & Cultural Care of your garden plants Yields Vigorous Growth and
Maximum Resistance to Diseases and Tolerance for
Insect Damage!
IPMBeginsWith…
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BasicSalsaIngredientsFromGardentoTable
CilantroOnionsPeppersTomatoes © 2014 Regents of the University of California
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PlanAheadforProperPlan'ng• GardenSpace
– Sizeofgrowingbed• PlantSize• Numberofeachplant• FullSun
– Direc'onofSun
• SoilPrepara'on– In-groundorRaisedBed
• Irriga'on• Nutri'on
P
C
T
O
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GardenSpace• Sizeofgardenbeddeterminesnumberofeachplant– A4’x4’bedshouldaccommodate2dwarforonebush-typetomato,2peppers,6cilantro,and12onionand/orgarlicbulbs
• Allplantsshouldbeinfullsun,6-8hoursperday– Avoidplan'ngnearwallsorfencesthatfacesunalldaytoavoidexcessiveheatreflec'ontoplants
• Plantlargerplants“behind”smallerplantstoavoidshading
© 2014 Regents of the University of California
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Room to Grow Largest Plants Tomatoes
Choose 1 or More fortheSIZEof your garden
• DeterminateHabit– “Bush”typesstopgrowthatabout3–5feetthensetfruit
• IndeterminateHabit– Needlargergardenarea
– “Vine”typestendtosprawlandrequiremoreroom&support
• ContainerorRaised-BedMidget,Pa'o,Dwarfarecompact– Usuallyshortlived,quickfruitproduc'on
• CherryTomatoes:Dwarftoover6feettall
© 2014 Regents of the University of California
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SoilIn-GroundBedsorRaisedBeds
• Medium-textured(sandy-loam),sod,well-drainedsoilisbestforthemixtureofplanttypesinthisgarden
• Lightsandysoilsorheavyclaysoilsarehardertoworkwithbutcanbemadeeasierwithorganicamendments– Wellcompostedmaterialslowinsaltorbagged
• Avoidareaswithrocks,highsalinity,orexcessivelydenseclay
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SoilPrepara<onWater-Wait-Cul<vate
In-GroundBed• Priortocul'va'on,make
surethesoilismoistbutnotthoroughlywet:
1. Cul'vatethetop1to2inches,raketheareatoremoveweedsandoldcropdebris;digoutroots
2. Irrigatetheplotdeeplytoencouragegermina'onofweedseeds;WAIT!
3. Cul'vatetokillweedseedlings4. AmendsoilwithOrganic
Maier
RaisedBed• Aderprepara'onofground
soil:1. Formsoilintoraisedbedand
plantwhilesoiliss'llmoist
• OREmptypre-baggedsoilintoraisedbed,leavingenoughroomtoplant&waterwithoutspillingoversides
Be sure to break up the clods in the soil, as seeds planted in cloddy soil will germinate poorly, and roots nor seeds will live long because the soil dries too quickly!
© 2014 Regents of the University of California
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Proper Planting for a Healthy Start Tomatoes
• Home-grownorpurchasedseedlingsshouldbe6-8inchestall,hardenedoff,stocky,andwellcoveredwithhealthygreenleaves
• Waterthoroughlyacoupleofhoursbeforeplan'ngoutandplantinadernoontominimizewaterlossduringcoolovernighthours
• Vigorousseedlingscanbeplanted2inchesdeeperthantheyareinthepot
• Avoiddamagingrootsandbruisingstems• Waterthoroughlytoseilesoilandeliminateairpockets
© 2014 Regents of the University of California
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Proper Planting for a Healthy Start Peppers
• Arebestplantedinraisedbeds
• DirectSeeding:– Followdirec'onsonseedpacketforspacing,depth,'metogermina'on,and
thinningofgerminatedseedlings– Keepsoilmoistduringthegermina'onperiod
• Transplants:– Waterthoroughlyacoupleofhoursbeforeplan'ngoutandplantinadernoonto
minimizewaterlossduringcoolovernighthours– Vigorousseedlingsshouldbeplantedtothedepthofthefirstleafonthestem,
about18to24inchesapart
• Ahighphosphorus,granularfer'lizershouldbeappliedtoPepperseedlingswhen4-6“trueleaves”arefullymature,ormixedwithback-fillsoilintheplan'ngholefortransplants– Waterthoroughlyadertransplan'ngtoseilesoil,eliminateairpockets
© 2014 Regents of the University of California
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Proper Planting for a Healthy Start Cilantro
• Seed(Coriander)mayneedtobecrackedorscarifiedbeforeplan'ng
• Plantseed1/2inchdeep(inrows12inchesapart)andthinseedlingsto6to8inchesbetweenplantsadergermina'on.
• Cilantroplantsaresensi'vetoheat,andwillbolttoseedquicklyinwarmweather– Canre-seedeverythreeweeksthroughtocoolseasonforcon'nuous
produc'onOR– Cutstemsoneinchabovethegroundandallowplanttore-growfora
secondculng– Harvesttheoutsideleavesandplantswillcon'nueproducingnewfoliage
un'lgonetoseed• Plantcilantrotransplants6to8inchesapartatsamesoillevelas
incontainerCompiled by Claudia Myers, UC Small Farm Center, Keith Mayberry, farm advisor, Imperial County and Yvonne Savio, UC Master Gardener and Extension Secretary, UC Vegetable Crops Department. © 2014 Regents of the University of California
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Onions
Proper Planting for a Healthy Start
• Onionsproducebeierfromseedortransplantsratherthanfromonionsets
• Plantseedabout0.25inchdeepandmaintaingoodsoilmoisture– Plantmoreseedsthan
necessaryandthinseedlings,savingthestrongestseedlingstoproducebulbs,atabout4-5inchesapart
• Soilshouldcoverthebaseofthedevelopingbulbjustenoughtoanchoritinplace
Garlic• Mostgarlicisgrownfrom
“cloves”ratherthanfromseed.Planttheclovesdirectlyinthegarden
• Donotbreakapartthemotherbulbun'lreadytoplant
• Donotremovethepapery“tunic”fromthecloves
• Plant2inchesdeep,4inchesapartintherow(with12inchesbetweenrows)
• Thelargertheclove,thelargerthebulbofgarlicatharvest
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ProperCulturalCareforCon'nuedHealthyGrowth
• Con'nuewithproperculturalprac'cestopromotehealthyplantswithbeierresistancetopestsanddisease….– ProperWateringPrac<ces– Nutrients;Fer<lizingCorrectly
Healthy plants will have maximum resistance to diseases and greater
tolerance for insect damage! © 2014 Regents of the University of California
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Water • Watertransplantsimmediately&thoroughly
• Maintainevensoilmoisture– Donotfluctuatebetweenheavywateringanddryingoutperiods– Coursemulch3-4inchesthickwillminimizefluctua'onsinsoil
moisture– Donotover-water
• Avoid“FixedSchedule”Watering-Waterasneeded!– Donotstressplantsbyallowingthemtowilt– Waterdeeplyfewer'mesperweek– Determinesoilmoisturewitha“feeltest”
• Ifwatercanbesqueezedfromahandfulofsoil–itstoowet!• Ifsoildoesnotholdtogether(loosely)adersqueezing–itstoodry!
– Useasoilprobeormoisturemetertodeterminemoistureatrootzoneoflargestplants
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WaterProperly
• Good&BadofSprinklerIrriga<on– GoodforseedlingsandLeachingsalts– Donotapplyfasterthancanbeabsorbedbysoil
• UseWaterCycling– Badincoolweather
• Contributestodiseasesonfruitandleafmolds– Avoidapplyingwaterinthismanneraderfruitbeginstoripen
© 2014 Regents of the University of California
IMPROPER WATERING IS THE #1
CAUSE OF POOR PLANT HEALTH!
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Nutrients • Primarynutrientsrequiredbyplants:
– C,H,O(fromairandwater)– Nitrogen(N),Phosphorous(P),Potassium(K)– Calcium(Ca),Magnesium(Mg),Sulfur(S)
• Nutrientsareabsorbedbyrootsalongwithwater• Requirementsdifferforstagesofgrowth• Organicsoilamendments• Commercialsoilmixesmaycontainslowreleasefer'lizers• Healthy,vigorousTomatotransplantsshouldnotrequire
addi'onalfer'lizerun'lfloweringandfruitsetarewellunderway.
• Peppersmaythrivefromanapplica'onofhighphosphorousfer'lizersatplan'ng.
© 2014 Regents of the University of California
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Fer'lizeCorrectly• Direct-sownseedlingsmayneed½strengthwater-solublefer'lizerevery10-15days– DoNOTallowrunoffofthisfer'lizerwater!
• Fortransplantsuseslow-releasefer'lizersintheplan'nghole
Ø UsuallyonlyN&P(andsome'mesK)needtobeaddedtomatureplantsingardensoilsaderfruitset
• “Sidedress”andDon’tApplyExcess(FollowLabelDirec'ons)• Indeterminate(Vining)typeTomatoesneedmoreNthanDeterminate(Bush)type
Ø Calcium(Ca)isusuallysufficientingardensoilsforTomatoes• WaterdeeplytoLeachSaltsthatmay“'e-up”calciuminsoil• Gypsumisgoodsourceifaddi'onalCaisneeded
© 2014 Regents of the University of California
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TooMuchorTooLiileNutri'on?• ExcessNitrogen:
– Plantsmoresuscep'bletoinsectpests&disease
– Willdelayflowering&fruitset
– FlowerDropandFailuretoSetFruit
• LackofCalcium:– BlossomEndRot
• Commononsandysoils,soilswithhighsalt
Phosphorus-deficient
Potassium-deficient
• LackofNitrogen:- Olderleavesareyellowish;newgrowth
sparse,undersized;plantsgrowslowlyandfoliagemaydrop
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IPMMethodsforControllingPlantPests
• PreventPests&Disease• CorrectIden'fica'onofPestorDisease• ReducePopula'onNumbers
• ApplyAppropriateControlMeasures
• RecognizeNaturalEnemiesofPests• EncourageNaturalEnemies
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Soil-borneDiseases&Nematodes
Iden'fica'on,Preven'on&ControlMeasures
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PhytophthoraRootRot
• Phytophthorarequireswarm,moistsoilsinordertocausediseaseofherbaceousplants.
• FloodedandsaturatedsoilcanspreadPhytophthoratohealthyplants.
• Symptoms– LeavesofplantsaffectedbyPhytophthorarotappeardroughtstressed
– Leavesmayturndullgreen,yellow,orinsomecasesredorpurplish
– WhenTomatoesandPeppersareaffected,rootsofallsizesdevelopwater-soakedspotsthatdryoutandturnachocolatebrown;outerroot'ssuemaycomeoff
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Fusarium&Ver0cillumWiltDiseases• Wiltsymptomsodenappearfirstononesideofaplant(aboveground)
• ChooseVarie<esdevelopedforDiseaseResistance:– Lookforthe“DiseaseIden'fica'onCodes”(V,F,FF)ontheplantlabelorseedpacket.
Fusarium - Tomato
Verti
cilli
um -
Pep
per
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• SoilsshouldbecleanaspossibletoavoidDiseasePathogens&Nematodes
• CropRota'on
• Cleansoilanddebrisfromtools,shoes
• Makesuredebrisfrompreviouscropshasdecayedcompletelyifledinsoil
ControllingSoil-borneDiseases&Nematodes
Stem & Bulb Nematode on Onion and Galls on roots caused by Root
Knot Nematodes.
Look for Disease Code (N) on plant labels that indicates resistance to root nematode
© 2014 Regents of the University of California
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ControllingSoil-borneDiseases&Nematodes
• GoodWaterManagement– Avoidover-wateringandprovidegooddrainingsoil
– Don’tspreaddiseaseorNematodeswithwaterrun-off
• Avoidapplyingexcessivefer<lizer
• SoilSolariza<on
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LeafFungi&Weeds
Iden'fica'on,Preven'on&ControlMeasures
© 2014 Regents of the University of California
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PowderyMildewDisease• Affects all plants in this garden except Onion/Garlic • Look for resistant plant varieties • To eradicate mild to moderate powdery mildew infections
• Use a horticultural oil, or one of the plant-based oils such as Neem oil or Jojoba Moderate temperatures (60 - 80°F)
and shade encourage the disease!
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ControllingPowderyMildew
Biological Fungicides are commercially available beneficial microorganisms formulated into a product that, when sprayed on the plant, inhibit or destroy fungal pathogens – Bacillus subtilis
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• Canquicklyshadeoutyoungcropplantsaswellasrobthesoilofnutrientsandwater– Controlisessen'al,especiallywhenthecropsareyoung
• Arehostsfordiseases&insectpests
Weeds
NeileleafgoosefoothostsBeetArmyworm
Blacknightshadehostsbacterialspot
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ControllingWeeds
• Exclusion&Preven'on– Neverletweedsgotoseedinyourgardenorinareassurroundingyourgarden.
• Hand-weedingandHoeing– Themostimportantweedmanagementop'oninthehomegarden!
• Mulching– useacoarse-texturedmulchwithalowwater-holdingcapacity.
• Solariza'on– Withclearplas'c
Theprimarymethodsforweedcontrolinvegetablegardensinclude:
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InsectPests&SnailsandSlugs
Iden'fica'on,Preven'on
&ControlMeasures
© 2014 Regents of the University of California
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• Aphidsonnewterminalgrowth,Whiteflyunderleaves,Thrips,andSootymoldonleavesandfruit
• Leafminer“mines”,Hornwormsinearlyseason,Snails&Slugsalways
BeontheLookout,BeaScout!
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BugstoWatchForBagradaBug
http://www.ipm.ucanr.edu/EXOTIC/index.html http://cisr.ucr.edu/pdf/bagrada-bug-capca-handout-sept-19-2012.pdf
“Largest numbers are typically observed in organic farms, community gardens, and residential vegetable gardens… Causes feeding damage on the fruits of bell pepper, melon, papaya, tomato…”
These are NOT Ladybeetles!
CHECK PLANTS REGULARLY & HAND-PICK OR VACUUM OFF!
© 2014 Regents of the University of California
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BugstoWatchForBrownMarmoratedS'nkBug
BMSB may reach very high numbers, and since one bug can feed on many fruit, losses can be severe. Adults and nymphs suck juices from fruit and seeds. BMSB damages fruits (citrus, fig, berries, grapes, beans, tomatoes, and other vegetables). Seeks winter shelter, and
large numbers may congregate on outside walls or invade homes by entering through small openings. Can also be hidden inside dense foliage layers or fruit clusters, and tend to hide or drop when startled.
Avoid damage with floating row covers Control Options: • Handpick or brush off plants into soapy water. • Use a hand-held vacuum regularly! • Be sure to destroy the egg masses found on the
underside of leaves. © 2014 Regents of the University of California
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Managing Insect Pests & Others Focus on the Long-Term Goal vs. Short-Term Satisfaction
• ManageWorms,Loopers,etc.,&BagradaBugsorBMSB
• Byhandpickingorvacuuminganddumpingintosoapywater
• MicrobialproductslikeBtforworms
• ModeratenumbersofLoopersandHornwormscanbebeneficialhostsforparasitesthataiackTomatoFruitworms
• DestroyeggmassesofBMSB
• TrapSnails&Slugs• Usecopperstripsaroundupperedgesofraised-bed&collectthemfordisposal.
• Puthollowed-outcantalouperindupsidedown,disposeofcollectedsnails/slugs
• ManageAphids,Leafminers,Whitefly,&Thrips
• Byiden'fyingandallowingtheirnaturalenemiestopreyonorparasi'zethem
• Aphidscanbepickedoff/squashedbyhandorknockAphidsandThripsoffwithsprayofwater
• Whiteflypopula'onscanbereducedbypruningtoallowgoodaircircula'on
• Clipoffandremoveolderleafminerinfestedleaves
• UseInsec<cidalSoapsandHor<culturalOils
• Othermoretoxicpes'cidesarenoteffec'veandmaycauseincreasedpopula'onsoftheseinsectpestsbykillingtheirnaturalenemies!
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BeneficialNaturalEnemiesofVegetablePestsFocus on the Long-Term Goal vs. Short-Term Satisfaction
1/8 to 4/5 inch long
Dev
il’s
Coa
ch H
orse
&
Dec
olla
te S
nails
1/4 inch long
Lady Beetle Adult & Larva Green Lacewing Adult & Larva
Min
ute
Pira
te B
ug
Predators of Snails & Slugs
Conserve these organisms! Use non-chemical or least toxic pest control methods!
© 2014 Regents of the University of California
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Short-Term Satisfaction costs everyone!
Besidesnotbeingeffec<veoverthelong-term:
1. Pesticides are expensive.
© 2014 Regents of the University of California
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2.If applied incorrectly, pesticides can have toxic
affects on non-target organisms.
• Children • Pets
• Plants
• Beneficial Natural Enemies
© 2014 Regents of the University of California
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3. When pesticides are applied to our homes, gardens, and landscapes they may drift in the air or be washed into a storm drain
by irrigation or rain.
© 2014 Regents of the University of California
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Our Watershed Provides Water Resources
• Municipal&Domes'cWaterSupply
• Recrea'on• WildlifeandEstuarineHabitat
hip://www.projectcleanw
ater.org/
© 2014 Regents of the University of California
SanDieguitoRiverWatershed
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Use Pesticides Correctly and Safely
• Usetheleasttoxicchemicalthatwillcontrolthepest– Insec'cidalSoapsandHor'culturalOils
• READTHELABELtomakesurethetargetpestiscontrolled
• READTHELABELforpossibletoxicitytoplantsandeffectsonbeneficialorganisms
• Spotspray• AvoidDrid
© 2014 Regents of the University of California
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ReadingaPes'cideLabel Active Ingredient
Azadirach'n............………..........................4.38% Inert Ingredients..........................................95.62%
NET CONTENTS 32 FL OZ (1QT) 946mL
See back panel for additional precautionary statements.
CAUTION
KEEP OUT OF REACH OF CHILDREN
Azadirach'nisderivedfromthenaturaloilfoundinseedsoftheNeemtree.© 2014 Regents of the University of California
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It’sTheWaterThatConnectsUs!
• ReadPes'cideLabelsandFollowDirec'onstotheLeier!
• StorePes'cidesinaSafeManner• DisposeofUnusedPes'cidesProperly
hip://www.projectcleanwater.org © 2014 Regents of the University of California
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UsefulPhoneNumbers:
• UnusedPes'cideDisposal:1-800-CLEANUP• MasterGardnerHotline: (858)822-6910
• UCCoopera'veExtension: (858)822-7711
• AgriculturalCommissioners’Office: (858)694-2739
© 2014 Regents of the University of California
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Resourcesforthispresenta<oninclude:
IntegratedPestManagementforTomatoes.FourthEdi'on.Revised:Strand,LarryL.,UniversityofCalifornia,StatewideIntegratedPestManagementProject.Publica'on3274.RegentsoftheUniversityofCalifornia. 1998.
GrowingTomatoesintheHomeGarden.Piienger,DennisR.,etal.UniversityofCaliforniaDivisionofAgricultureandNaturalResources.Publica'on8159.hip://anrcatalog.ucdavis.edu
UCIPMPestManagementGuidelines:Tomato,Peppers,Onion/Garlic,Cilantro.hip://ipm.ucanr.edu/PMG/GARDEN/VEGES/tomato.htmlhip://ipm.ucanr.edu/PMG/GARDEN/VEGES/peppers.htmlhip://ipm.ucanr.edu/PMG/GARDEN/VEGES/onions.htmlhip://www.rain.org/greennet/docs/exo'cveggies/html/cilantro.htm
UCIPMOnline.StatewideIntegratedPestManagementProgram.UniversityofCalifornia.AgricultureandNaturalResources.hip://ipm.ucanr.edu/
hip://www.projectcleanwater.org
PhotographsandPicturesarethepropertyof:UniversityofCalifornia,AgricultureandNaturalResources(unlessotherwisenoted).
© 2014 Regents of the University of California
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§ SalsaGardening§ April25–PineValleyBranchLibrary
§ HerbGardensforCooking§ May2–RanchoSanDiegoBranchLibrary
§ ControllingAntstheHealthyWay§ May16–4SRanchBranchLibrary
• BeginningGardening§ June6–SpringValleyBranchLibrary
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