Ib txwm nyob rau Tebchaws Meskas, tsob ntoo cog ntoo nyiam qhov chaw nyob hauv cov tsiaj qus suav nrog thaj chaw ntub dej hauv qab thiab ib ncig ntawm cov pas dej thiab cov kwj deg. Cov neeg uas xav ntxiv ib qho rau lawv cov toj roob hauv pes yuav tsum xav txog txhua yam ntawm tsob ntoo ua ntej cog vim tias tsob ntoo muaj ntau yam teeb meem uas tsis ua kom haum rau ntau qhov chaw.
Classic Cottonwood Looks
Cottonwood (Populus deltoids), feem ntau hu ua Eastern cottonwood, yog tsob ntoo loj hlob sai uas tau txais kev loj hlob ntxiv 6-taw txhua xyoo thiab ncav cuag qhov siab thiab dav ntawm 100 feet. Vim yog tus cwj pwm ntawm kev loj hlob sai, ntoo yog mos thiab nkig, tawg yooj yim nyob rau hauv cua.
Bark, Stems, thiab Foliage
Cov tawv ntoo thiab lub cev ntawm tsob ntoo uas paub tab yog tob tob, tuab thiab grey. Lub bark yog greenish-grey ntawm cov ntoo hluas. Cov tub ntxhais hluas stems thiab ceg yog yellowish-ntsuab nyob rau hauv cov xim, hloov mus rau ib tug greyish xim thaum lawv muaj hnub nyoog. Cov ntoo paub tab tsim qhov qhib thiab tsis zoo li lub kaus mom.
Nplooj yog tuab thiab lub plawv zoo li tus nrog ntxhib ridges nyob rau hauv cov npoo, nruab nrab ntawm 2 mus rau 6 ntiv tes ntev. Thaum lub caij cog qoob loo lawv cov xim yog ntsuab, hloov mus rau daj thaum lub caij nplooj zeeg ua ntej cov nplooj poob thaum lub caij ntuj no. Qhov ob peb nti ntev, flattened petiole cia cov nplooj tig los ntawm ib sab mus rau sab hauv cua.
paj thiab noob
Eastern cottonwood ntoo yog dioecious, txhais tau hais tias muaj txiv neej thiab poj niam ntoo ua paj, tab sis cov poj niam ntoo yog cov tsim cov paj rwb zoo li cov ntoo nws lub npe. Cov ntoo pib tsim cov noob thaum lawv muaj hnub nyoog 10 xyoo.
Ua ntej cov nplooj sprouts nyob rau hauv caij nplooj ntoos hlav, 6-nti reddish-daj catkins dai ntawm ceg thiab loj hlob mus rau hauv noob. Txhua lub noob qoob loo uas muaj nyob rau ntawm cov catkin paub tab tuav ntau cov noob, nrog cov poj niam ntoo tsim cov noob nyob ib puag ncig los ntawm cov khoom zoo li paj rwb. Seedlings yooj yim sprout thiab nws tsis yog txawv txawv uas nrhiav tau lawv sprouting nyob rau hauv tsob ntoo lub canopy thiab ib ncig ntawm qhov chaw uas lawv poob.
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Drawbacks thiab Landscape Considerations
Vim tsob ntoo qhov loj thiab nyiam ua rau cov ceg tawv tawg, nws yuav tsum muaj thaj chaw loj hauv toj roob hauv pes kom ua tiav nws qhov loj me tawm ntawm txoj kev los ntawm cov qauv lossis cov xov hluav taws xob. Cottonwood ntoo ua cov ntoo ntxoov ntxoo zoo thaum cog rau hauv qhov chaw tsim nyog.
Thaum xav txog qhov chaw ruaj khov rau tsob ntoo, xav txog nws cov hauv paus aggressive uas nrhiav kev ya raws. Tsis txhob cog ze rau cov kab mob septic vim cov hauv paus hniav yuav nrhiav nws tawm thiab tuaj yeem ua rau lub cev puas tsuaj tsim kev kho kim. Koj kuj tsis xav cog tsob ntoo ze ntawm lub tsev lub hauv paus lossis ib txoj kev taug kev vim cov cag tuaj yeem nqa tau thaj chaw thiab ua rau puas tsuaj.
Txiv neej tsob ntoo cov noob tsim cov paj tawg paj thoob yards. Cov noob tawg yog qhov dav heev uas lawv tuaj yeem npog thaj tsam zoo li daim pam ntawm daus. Qhov tseeb, qhov kev ntxhov siab yog qhov phem heev uas qee lub zos tsis tso cai cog cov poj niam ntoo raws li kev taug kev lossis kev taug kev. Txhawm rau tiv thaiv qhov no los ntawm qhov tshwm sim cov neeg ua teb yuav tsum cog cov txiv neej paj ntoo uas tsis tsim cov paj rwb xws li txiv neej cultivar "Siouxland."
Kev txiav txim siab yuav khoom
Vim cov ntoo loj hlob sai heev, koj yuav pom cov ntoo muaj 1 xyoos thiab yau dua hauv cov chaw zov me nyuam hauv zos thoob plaws qhov chaw loj hlob. Cov chaw zov me nyuam hauv online xa cov ntoo thaum nyob hauv lawv cov theem dormant thiab barerooted. Qhov ntau thiab tsawg feem ntau yog los ntawm 1 ko taw mus rau 4 ko taw siab. Qee qhov chaw zov me nyuam online muag cov ntoo cog ntoo yog Nature Hills thiab Porcupine Hollow Farms - nco ntsoov rov qab los yog sau npe rau cov ntawv ceeb toom yog tias lawv tawm ntawm Tshuag vim nws yuav tsis yog lub caij nyoog rau kev xa khoom.
Yog hais tias yuav ib tsob ntoo ntawm koj lub chaw zov me nyuam saib xyuas cov ntoo noj qab nyob zoo uas muaj nplooj xim zoo thiab tsis pom muaj kab tsuag lossis kab mob. Xyuas lub thawv kom paub tseeb tias cov hauv paus hniav tsis loj hlob tawm hauv qab, txhais tau tias cov hauv paus hniav tau outgrown nws lub lauj kaub. Tsob ntoo nrog wrapping hauv paus kab tej zaum yeej tsis loj hlob zoo ib zaug cog rau hauv av.
Preferred Growing Conditions
Cottonwood ntoo yog cov ntoo tawv thiab tsis fussy heev txog lawv cov kev loj hlob, yog li txawm tias tus ntiv tes xoo dub yuav tsum muaj kev loj hlob zoo. Lawv muaj ntau yam hardiness, loj hlob zoo hauv USDA zones 2 txog 9, yog li lawv ua tau zoo nyob rau hauv yuav luag txhua cheeb tsam thoob plaws hauv Tebchaws Meskas.
Lub teeb nyiam
tsob ntoo tolerates ib nrab hnub, tab sis tso rau ntawm nws txoj kev loj hlob zoo tshaj plaws nyob rau hauv ib qhov chaw uas tau txais tag nrho lub hnub.
Nyob zoo
Cottonwood ntoo loj hlob nyob rau hauv ntau hom av thiab tso rau nws txoj kev loj hlob zoo tshaj plaws nyob rau hauv cov neeg uas nyiam moist. Txawm li cas los xij, nws tsis zam kev loj hlob hauv cov av uas niaj hnub soggy thiab ntub dej.
Basic Requirements for Care
Vim cov ntoo loj hlob sai heev thiab tsis fussy txog lawv cov kev loj hlob kom noj qab nyob zoo, cov kev cai tseem ceeb ntawm kev saib xyuas yog muab txaus noo noo thiab pruning. Tsob ntoo tsis tas yuav siv chiv rau kev loj hlob zoo.
Moisture Requirements
Cottonwood ntoo yog cov drought-resistant ib zaug tsim, tab sis thaum tsob ntoo tseem hluas los yog cog tshiab, cov neeg ua teb yuav tsum siv dej txhua lub lim tiam. Txawm li cas los xij, tsob ntoo ua tau zoo tshaj plaws nrog kev siv dej tsis tu ncua.
Pruning Requirements
Txij thaum tsob ntoo loj tuaj thiab dav, thaum tsob ntoo nce mus txog qhov siab thiab qhov dav, nws yuav luag tsis yooj yim sua kom ua tau ntau yam pruning rau tsob ntoo yam tsis muaj kev pab los ntawm tus kws cob qhia arborist. Thaum tsob ntoo tseem hluas, txawm li cas los xij, nws yog ib qho tseem ceeb rau prune kom tsob ntoo txhim kho cov qauv muaj zog.
Txiav tawm cov dej nqus dej uas tsim nyob ib puag ncig lub cev kom tsob ntoo tsuas muaj ib lub cev loj xwb. Tshem tawm cov neeg tuag, puas, lossis kab mob hauv lub sijhawm txhua xyoo. Koj tseem yuav xav tshem tawm cov ceg ntoo hla lossis cov uas tuaj yeem cuam tshuam nrog cov qauv. Nco ntsoov xyuas kom koj sterilize koj cov cuab yeej pruning kom koj tsis txhob kis kab mob lossis kab tsuag mus rau tsob ntoo.
Pest and Disease Problems
Lwm qhov tsis zoo rau cov ntoo no yog lawv yoog rau ntau yam kab mob thiab kab tsuag. Cov teeb meem no tuaj yeem txo lub neej ntawm tsob ntoo thiab vim nws loj loj; teeb meem yuav nyuaj kho.
Cov Kab Tsuag Ntau Yam
Ob hom kab kab kab kab kab ntau tshaj plaws uas cuam tshuam cov ntoo cog ntoo yog cov paj ntoo petiole gall aphid thiab paj ntoo nplooj kab, uas yog qhov kev puas tsuaj ntau dua ntawm ob. Feem ntau cov teeb meem kab tsuag tiv thaiv tau los ntawm kev ntxuav cov khib nyiab uas poob ib ncig ntawm tsob ntoo.
- Poplar petiole gall aphid: Cottonwood ntoo raug kab mob gall aphids qhia cov cim qhia los ntawm cov pob me me ua raws cov nplooj stems. Cov kab mob muaj cov kab mob overwintering aphids uas faib qhib lub gall nyob rau hauv lub caij nplooj ntoos hlav thiab tso winged neeg laus aphids. Cov aphids tsis ua rau tsob ntoo puas, tsis yog tsim cov galls uas tsis zoo, thiab tsis tas yuav tsum tswj.
- Cottonwood leaf beetle: Cottonwood nplooj kab yog cov kab mob loj thiab ceev ceev, tshwj xeeb tshaj yog cov ntoo uas muaj hnub nyoog 3 xyoos thiab yau dua. Yog tias koj pom cov kab me me nrog lub taub hau dub thiab cov cim daj thiab txiv kab ntxwv ntawm nws lub cev, nws yuav muaj teeb meem rau koj. Cov kab overwinters nyob rau hauv cov nplooj poob poob los yog hauv qab tsob ntoo cov tawv ntoo thiab tawm hauv qhov sov sov kom pub rau tsob ntoo nplooj ntawv nws thiaj li skeletonizing nws, uas tuaj yeem cuam tshuam rau tsob ntoo txoj kev loj hlob. Thaum tsis muaj kab mob loj heev, cov kab tua kab tua kab tua kab, tab sis thaum muaj kev sib kis loj heev, cov neeg ua teb yuav tau kho tag nrho cov ntoo nrog cov tshuaj tua kab Neem roj los yog Bacillus thuringiensis. Yog tias cuam tshuam nrog tsob ntoo loj, koj yuav tsum hu rau tus kws tshaj lij kom ncav cuag txhua qhov chaw ntawm tsob ntoo thaum kho nws nrog tshuaj tua kab.
Common Disease Problems
Cov neeg cog qoob loo ntxiv tsob ntoo cog ntoo rau hauv lawv cov toj roob hauv pes yuav ntau dua qhov yuav ntsib teeb meem tshwm sim nrog tsob ntoo, vim lawv muaj ntau yam teeb meem ntsig txog kab mob. Qee qhov teeb meem tsis lav tswj tau vim qhov xwm txheej tsis muaj kev phom sij rau lub neej, thaum lwm yam teeb meem kho tau los ntawm kev ua kom thaj chaw hauv qab tsob ntoo kom tsis txhob poob cov khib nyiab.
Ntau yam teeb meem nkag mus rau tsob ntoo los ntawm qhov txhab, uas feem ntau tshwm sim vim raug mob los ntawm cov khoom siv nyom. Yog li ntawd, nws yog ib qho tseem ceeb uas yuav tsum ua kom thaj chaw hauv qab tsob ntoo tsis muaj cov nroj tsuag thiab cov nyom, yog li tsis tas yuav siv lub tshuab txiav nyom lossis cov nroj tsuag trimmer nyob ib ncig ntawm tsob ntoo lub cev. Qee yam kab mob uas cuam tshuam rau cov ntoo no yog:
- Cytospora thiab septoria canker fungus: Cov teeb meem fungal no nyuaj rau kev sib txawv ntawm ib leeg thiab cuam tshuam rau cov ntoo uas tsis zoo los ntawm kev siv cov cuab yeej pruning uas tsis muaj tshuaj tua kab los yog qhov txhab ntawm cov tawv ntoo ua rau cov ntoo raug mob ntau dua. rau tus kab mob. Qhov teeb meem qhia tau tias yog thaj chaw cankered ntawm stems thiab ceg, uas nws thiaj li saib watersoaked thiab brownish-liab. Txoj kev tswj tsuas yog pruning tawm feem cuam tshuam ntawm tsob ntoo, nco ntsoov txiav tag nrho cov kab mob ntawm tsob ntoo thiab mus rau hauv cov ntoo noj qab haus huv. Thaum mob hnyav, cov kab mob tuaj yeem tua tsob ntoo.
- Heart rot fungus: Kev mob ntawm tsob ntoo lub cev tso cai rau cov fungus nkag rau tsob ntoo uas cuam tshuam rau nws lub siab thiab tsob ntoo nws thiaj li rot thiab tuag. Cov cim qhia ntawm qhov teeb meem tshwm sim raws li conks txuas rau tsob ntoo lub cev, feem ntau ntawm lub hauv paus thiab tsis muaj kev kho mob. Tiv thaiv qhov teeb meem los ntawm kev tsis ua rau tsob ntoo lub cev thiab tawv.
- Fungal leaf spots: Cottonwood tree are susceptible to various types of fungal leaf spots that appeared as discolored areas on the tree's foliage. Nyob ntawm cov teeb meem tshwj xeeb ntawm cov kab mob fungal, cov pob khaus tshwm li greyish lossis xim av thiab yog tias tsis kho, defoliation tshwm sim. Tswj qhov teeb meem sai li sai tau thaum koj pom muaj tus kab mob tshwm sim siv tooj liab fungicide thiab txau tag nrho tsob ntoo ib hlis ib zaug.
- Fungal rust spots: Cov kab xeb xeb tshwm rau ntawm nplooj, feem ntau yog xim daj lossis xim daj, uas tig xim tsaus rau lub sijhawm. Qhov teeb meem loj tshaj plaws thaum lub caij ntuj no, tsis muaj kev phom sij rau tsob ntoo, thiab tsis muaj kev tswj hwm, vim qhov teeb meem tsuas yog kho kom zoo nkauj xwb.
- Powdery mildew fungus: Powdery mildew yog ib qho ntawm cov teeb meem uas paub tau yooj yim tshaj plaws uas cuam tshuam nrog cov ntoo, thiab raws li nws lub npe qhia, cov hmoov dawb txheej npog cov nplooj. Cov fungus feem ntau muaj teeb meem thaum hmo ntuj txias, tab sis cov av noo siab. Qhov teeb meem feem ntau yog tshuaj pleev ib ce thiab tsis lav tswj, tab sis thaum muaj kev sib kis hnyav, txau tag nrho tsob ntoo nrog cov tshuaj tua kab mob tooj liab thiab rov ua dua txhua plaub lub lis piam yuav tsum tswj qhov teeb meem.
- Phymatotrichum paus rot: Qhov no yog ib qho teeb meem fungal cuam tshuam cov av uas hloov mus rau tsob ntoo hauv paus system thiab tsis muaj kev tswj kev xaiv rau tsob ntoo. Qhov mob hnyav tshaj plaws thaum lub caij ntuj sov thiab cov neeg ua teb tuaj yeem pom cov nplooj sai sai tig bronze thiab wilting nyob rau hauv hnub, tab sis tseem txuas nrog tsob ntoo. Qhov kev xaiv tsuas yog tshem tsob ntoo ntawm toj roob hauv pes.
Txoj Kev Txaus Ntshai Tab sis Teeb meem tsob ntoo
Cottonwood ntoo tsis yog siv nyob rau hauv toj roob hauv pes raws li lawv ib zaug vim yog tag nrho cov teeb meem cuam tshuam nrog lawv. Txawm li cas los xij, yog tias cog rau hauv qhov chaw tsim nyog uas cov ntoo mos thiab cov hauv paus hniav txhoj puab heev tsis ua rau puas tsuaj, lawv ua rau cov ntoo loj hlob sai sai, tshwj xeeb tshaj yog txiv neej cultivars.
