June Gardening Tips

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Zone 1

  • Plant lettuce seedlings at intervals of every few weeks
  • Prune and thin out spring-flowering shrubs after bloom is finished
  • After their leaves yellow and dry up, divide and transplant spring

    bulbs

  • Set out groundcover plants and start lawns
  • Fertilize established lawns
  • Consider container planting for warmth-loving vegetables (eggplant,

    tomatoes, peppers)

  • Continue to protect tomato seedlings, especially during cold nights
  • Start perennials from seed by sowing in the ground
  • Heat up new compost piles by adding garden soil and compost activator
  • Remove faded flowers from cool-weather annuals to prolong their bloom

    season

  • Transplant warm-season vegetable seedlings; give them a warm start by

    planting through mulches of thick plastic

  • Set out cool-weather herbs such as chives and parsley

Zone 2

  • Apply sulfur to control fungus problems on apple trees, roses and

    grapevines

  • Set out seedlings of warm-season annuals and vegetables
  • Activate and stir compost piles weekly
  • Plant summer-flowering bulbs
  • Pinch off first flower buds on chrysanthemum and carnation plants to

    coax bigger blooms

  • Set out cool-weather herbs such as chives and parsley
  • After their leaves yellow and dry up, divide and transplant crowded

    spring bulbs

  • Plant groundcovers
  • Fertilize and aerate established lawns
  • Divide and transplant spring-blooming perennials after they flower
  • Fertilize, prune and thin out spring-flowering shrubs
  • Plant balled-and-burlapped and container trees, shrubs and vines

Zone 3

  • Set out seedlings of warm-season annuals and vegetables
  • Plant summer-flowering bulbs
  • Weed asparagus and strawberry beds
  • Put up trellises or netting for peas, pole beans and flowering vines
  • Divide and replant spring-blooming perennials after the flowers fade
  • Plant container roses
  • Fertilize and aerate lawns
  • Plant balled-and-burlapped and container trees, shrubs and vines
  • Apply sulfur to control fungus problems on apple trees, roses and

    grapevines

  • Pinch off first flower buds on chrysanthemum and carnation plants to

    coax bigger blooms

  • Protect cole crops (cabbage, broccoli, kale) from egg-laying cabbage

    white butterflies with insect barrier cloth

  • After their leaves yellow and dry up, divide and transplant crowded

    spring bulbs

Zone 4

  • Plant seedlings of warm-season annuals and vegetables
  • Sow seed of fast-growing, heat-loving herbs, vegetables (basil,

    squash, melons) and flowers (nasturtiums, zinnias) directly in ground

  • Thin out small green fruits on apple, peach and plum trees to one

    every 6 inches on the branch

  • Dust potato plants to prevent infestations of potato beetle
  • Set up trellises to support pole beans, morning glories and cucumbers
  • Remove newest shoots from geranium plants to encourage fuller plants
  • Plant new lawns and fertilize and aerate established lawns
  • Plant container roses, shrubs and trees in well-amended soil
  • Divide and transplant spring-flowering perennials that have finished

    blooming

  • Protect cole crops (cabbage, broccoli, kale) from egg-laying cabbage

    white butterflies with insect-barrier cloth

  • Weed asparagus and strawberry beds
  • Remove new flower buds from chrysanthemums and carnations to coax

    bigger blooms

Zone 5

  • Divide and transplant spring-flowering perennials that have finished

    blooming

  • Harden off and plant seedlings of warm-weather vegetables and flowers
  • Thin out small green fruits on apple, peach and plum trees to one

    every 6 inches on the branch

  • Sow seeds of perennials directly into the ground
  • Dust potato plants to prevent infestations of potato beetle
  • Pinch newest shoots on geranium plants to encourage fuller plants
  • Train your lawn to grow deep roots; Mow often, at a high setting
  • Plant balled-and-burlapped and container shrubs and trees
  • Feed roses as the first flower buds appear; apply fungicide to

    prevent powdery mildew or blackspot

  • Weed asparagus and strawberry beds
  • Feed young corn plants with high-nitrogen fish emulsion fertilizer
  • Mulch flower and vegetable gardens to conserve water during heat

    waves

Zone 6

  • Prune vines (spring-blooming clematis and wisteria) after they’ve

    flowered

  • Remove spent flowers from spring annuals to stretch the blooming

    season

  • Mulch flower and vegetable gardens to conserve water during hot

    spells

  • Plant fall-blooming perennials now
  • Thin out small green fruits on apple, peach and plum trees to one

    every 6 inches on the branch

  • Sow seeds of perennials directly into the ground
  • Harden off and plant seedlings of warm-weather vegetables and flowers
  • Prune once-blooming roses after they’ve flowered
  • Continue to spray peach and apple trees to control fungal diseases
  • Plant balled-and-burlapped and container shrubs and trees
  • Lightly prune tips of blackberries and pinch flowers off young

    grapevines to form and train growth of new canes

  • Fertilize and prune azaleas, lilacs, spirea and rhododendrons after

    they bloom

Zone 7

  • Replace mulch and aerate soil in permanent potted gardens
  • Remove spent flowers from spring annuals to stretch the blooming

    season

  • Plant fall-blooming perennials now
  • Prune once-blooming roses after they’ve flowered this month
  • Trim back vines (spring-blooming clematis and wisteria) after they

    bloom

  • Begin feeding vegetable plants as they start to flower
  • Continue to spray peach and apple trees to control fungal diseases
  • Plant balled-and-burlapped and container shrubs and trees
  • Lightly prune tips of blackberries and pinch flowers off young

    grapevines to form and train growth of new canes

  • Set out seedlings of warm-weather vegetables and annuals
  • Sow seeds of heat-loving vegetables (squash, pumpkins, melons)

    directly into the ground

  • Continue to fertilize roses and treat with fungicide as needed

Zone 8

  • Pinch off flower buds to promote leafier basil plants
  • Fertilize vegetable plants as they begin to bloom
  • Lightly prune tips of blackberries and pinch flowers off young

    grapevines to form and train growth of new canes

  • Take cuttings from your favorite shrubs when the branch wood hardens

    slightly

  • Plant seedlings of heat-loving vegetables such as melons, peppers and

    pumpkins for fall harvests

  • Set out seedlings of late-summer flowering annuals
  • Add a layer of mulch (2-3 inches) around newly planted trees and

    shrubs

  • Cut back and thin out diseased or spindly branches of

    spring-flowering shrubs

  • Prune once-blooming roses after they’ve flowered this month
  • Fill flower garden gaps with larger sizes of summer-blooming annuals
  • Replace mulch and aerate soil in permanent potted gardens
  • Plant fall-blooming perennials now

Zone 9

  • Deep water alkaline-sensitive trees, including Japanese maple and

    saucer magnolias, and apply an acid fertilizer to prevent alkaline burn

  • Replace mulch and aerate soil of potted plantings
  • Deep soak and fertilize fig and avocado trees; mulch heavily to

    protect shallow roots

  • Protect trunks of young trees, especially citrus, from sunscald with

    tree wrap or white latex paint

  • Take cuttings from your favorite shrubs when the branch wood hardens

    slightly

  • Remove bloomed-out spikes from salvias, pentas and penstemons to

    prolong their bloom

  • Set out shallow dishes of water and overripe fruit to attract

    butterflies

  • Plant seedlings of heat-loving vegetables such as melons, peppers and

    pumpkins for fall harvests

  • Set out seedlings of late-summer flowering annuals
  • Add a layer of mulch (2-3 inches) around newly planted trees and

    shrubs

  • Spray wilting fuchsias with water and monitor for signs of fuchsia

    mite

  • Pinch off flower buds to promote leafier basil plants

Zone 10

  • Continue to fertilize summer annuals to encourage bursts of bloom
  • Plant gladioli bulbs every few weeks for successive cut flowers

    through the summer

  • Harvest vegetables as soon as they reach optimum size
  • Make maximum use of scarce water by drip irrigating, watering early

    in the day and planting in water-needs zones

  • Trim bloomed-out spikes from salvias, pentas and penstemons to

    prolong their bloom

  • Remove withered blooms from crape myrtles to spur new flower

    formation

  • Keep caladiums and coleus in high color by pinching off faded leaves,

    applying an all-purpose fertilizer and watering consistently

  • Apply beneficial nematodes now to destroy ground-dwelling Japanese

    beetle grubs

  • Give roses one last feeding for the summer
  • Check moisture levels of potted gardens and new transplants
  • If holes appear in geraniums or petunias, control budworm with Bt;

    use diatomaceous earth to control earwig damage in dahlias

  • Protect trunks of young trees, especially citrus, from sunscald with

    tree wrap or white latex paint

Zone 11

  • Plant gladioli bulbs every few weeks for successive cut flowers

    through the summer

  • If holes appear in geraniums or petunias, control budworm with Bt;

    use diatomaceous earth to control earwig damage in dahlias

  • Harvest vegetables as soon as they reach optimum size
  • Watch plants for signs of stress (wilting, sunscald) and irrigate as

    needed with long, deep soaks

  • Apply beneficial nematodes now to destroy ground-dwelling grubs of

    Japanese beetles

  • Give roses one last feeding for the summer
  • Check moisture levels of potted gardens and new transplants
  • Make maximum use of scarce water by drip irrigating, watering early

    in the day and planting in water-needs zones

  • Protect trunks of young trees, especially citrus, from sunscald with

    tree wrap or white latex paint

  • Set out shallow dishes of water and overripe fruit to attract

    butterflies

  • Keep caladiums and coleus in high color by pinching off faded leaves,

    applying an all-purpose fertilizer and watering consistently

  • Deep water palm trees and treat with chelated iron if new foliage is

    pale or yellowed