Lub USDA (United States Department of Agriculture) Plant Hardiness Zone Daim ntawv qhia muab faib ua 13 thaj chaw. Zoo li txhua cheeb tsam, Zone 4 muaj ob pawg, 4a thiab 4b. Cov cheeb tsam no yog cov lus qhia rau kev xaiv cov nroj tsuag uas yuav muaj sia nyob qhov txias txias hauv cheeb tsam no.
Zone 4 Hardiness Temperatures
Txhua thaj chaw sib cais los ntawm qhov sib txawv ntawm 10 ° F.
Qhov no txhais tau tias:
- Zone 4 yog 10°F txias dua Zone 5.
- Zone 5 yog 10°F txias dua Zone 6.
Zone 4 Subset Temperatures
Cov subzones sib cais los ntawm 5 ° F. Qhov ntawd txhais tau tias rau Zone 4:
- Zone 4:Muaj qhov kub nruab nrab ntawm -20°F txog -30°F rau Zone 4.
- Zone 4a: Muaj qhov kub thiab txias nruab nrab ntawm -25 ° F txog -30 ° F rau Zone 4.
- Zone 4b: Muaj qhov kub thiab txias nruab nrab ntawm -20°F txog -25°F rau Zone 4.
Muaj feem ntau qhov kub thiab txias hauv cheeb tsam thiab cov subsets vim huab cua txawv txawv thiab huab cua hloov pauv tsis tau xav txog. Cov kub nruab nrab no yuav tsum tau coj los ua lub hauv paus rau huab cua.
Frost Dates
Zone 4 yog ib lub caij nyoog luv tshaj plaws ntawm USDA zones. Thawj hnub thiab hnub kawg Frost tuaj yeem hloov pauv ib lub lis piam lossis ob, tab sis raws li txoj cai dav dav, cov hnub Frost yog siv rau thaj chaw los npaj cog qoob loo.
Frost hnub rau Zone 4 kawg thiab thawj frosts rau lub xyoo yog feem ntau:
- Hnub kawg Frost: Tsib Hlis 15 txog rau Lub Rau Hli 1 feem ntau yog lub caij ntuj sov kawg rau Zone 4.
- First Frost date: Cuaj hlis 15 txog Lub Kaum Hli 1 feem ntau yog thawj qhov dej khov rau thaj tsam 4.
Txhawm rau kom nyob twj ywm tam sim no ntawm cov lus ceeb toom Frost, rub lub app hnub Frost. Txhua yam koj yuav tsum tau ua yog sau koj tus lej zip kom nkag mus rau koj lub sijhawm nyob hauv cheeb tsam.
2012 USDA Cheeb Tsam Hloov Pauv Hloov
Nyob rau xyoo 2012, cov neeg ua teb pom kev hloov pauv me ntsis hauv thaj tsam thaj tsam thaum USDA hloov kho Daim Ntawv Qhia Plant Hardiness Zone. Lawv nrhiav pom daim ntawv qhia tshiab tau pom 5 ° F ib nrab ntawm thaj tsam nce ntxiv hauv 1990 daim ntawv qhia. Lub koom haum National Gardening tau hais tias qhov kev hloov pauv no feem ntau yog vim huab cua tshiab tshaj tawm cov cuab yeej ua ke nrog kev koom tes ntau dua hauv cov chaw huab cua muab cov ntaub ntawv rau USDA.
Zone 4 States
Txhua lub xeev muaj ntau dua ib cheeb tsam vim qhov sib txawv ntawm huab cua thiab thaj chaw. Ib txhia muaj ntau hardiness aav. Piv txwv li, Montana muaj plaub thaj chaw sib txawv. Muaj 22 lub xeev uas muaj Zone 4 cheeb tsam.
| Alaska | Arizona | Colorado | Idaho |
| Iowa | Maine | Michigan | Minnesota |
| Montana | Nebraska | Nevada | New Hampshire |
| New Mexico | New York | North Dakota | Oregon |
| South Dakota | Utah | Vermont | Washington |
| Wisconsin | Wyoming |
Zone 4 Vaj Tswv Qhia
Tseem muaj ntau yam zaub, txiv hmab txiv ntoo thiab lwm yam ntoo thiab nroj tsuag tuaj yeem loj hlob zoo nyob rau thaj tsam 4.
- Cov ntoo txiv ntoo uas loj hlob hauv Cheeb Tsam 4 suav nrog, Askiv thiab Dub walnuts, Northern pecans, Suav thiab Asmeskas chesynuts, King Nut hickory thiab ob peb lwm yam.
- Txiv Hmab Txiv Ntoo rau Thaj Chaw 4 suav nrog, txiv duaj, txiv apple thiab txiv ntoo.
- Tsuas qaub cherries vam meej nyob rau thaj tsam 4-6. Qab zib cherries xav tau qhov kub thiab txias hauv thaj tsam 5-7.
- Yog cov ntoo raug xaiv 'hardy' ces lawv feem ntau haum rau loj hlob hauv Zone 4.
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Txiv hmab txiv ntoo xav tau ib tug xov tooj ntawm 'hnub txias' thiaj li tsim tau txiv hmab txiv ntoo. Cov hnub txias yog cov hnub xav tau ntawm qhov kub thiab txias 32 ° F -45 ° F.
Close-Up Ntawm Tes Tuav Txiv lws suav ntawm Zaub Vaj - Zone 4 xav tau hnub txias dua li thaj tsam 7 lossis 8.
- Zaub, xws li taum, thiab cov qoob loo huab cua txias, pob kws, dib, squash, lws suav, peppers thiab ntau lwm yam tuaj yeem loj hlob hauv Zone 4 lub caij ntuj sov. Nco ntsoov xyuas cov npe cog thiab cov noob pob rau thaj chaw.
Zone Designations Tsis suav nrog txhua yam
Zone designations yog raws li qhov kub thiab txias, tab sis muaj ntau lwm yam yuav tsum tau xav txog thaum cog ib lub vaj, ntoo los yog landscaping koj vaj. Cov no muaj xws li droughts, microclimates, av fertility / tej yam kev mob, dej nag thiab txawv txawv huab cua hloov / qauv. Koj tuaj yeem pom cov ntaub ntawv no hauv Sunset's The New Western Garden Book.
Zaj Lus Qhia rau Thaj Chaw 4
Zone 4 muaj lub caij loj hlob luv, tab sis koj tuaj yeem tseb noob hauv tsev los tiv thaiv qhov no. Nco ntsoov tias koj nkag siab tias cov nroj tsuag loj hlob zoo tshaj plaws hauv koj cheeb tsam ua ntej nqis peev nyiaj thiab lub sijhawm.
