Monthly Landscaping
Tips
March
| April | May | June
| July/August | September | November/December
March
Plant
- Plant pansies in ground or pots.
- Seed annuals indoors.
Pond Care
- Remove leaves and debris from ponds.
Maintenance
- Apply dormant spray to fruit trees before new growth appears.
- Prune winter-damaged hedges. Trim more at top than bottom to allow
light to reach the lower branches.
- Prune young trees before they leaf out. Remove dead and crossing
branches.
- Clean up and mulch all existing beds.
- Trim yews, junipers, arborvitae, hemlock.
- When weather permits, mow lawn short to remove dead grass.
- Cut back perennials and ornamental grasses before new growth appears.
- Trim back summer bloomers like spirea and potentillas. Get rid
of last season's blooms and trim back so they are not so fluffy.
- Thin and trim the wind growth on the inside of flowering trees
before the leaves come out.
April
Plant
- Plant potatoes, cabbage, and broccoli early in month.
- Plant asparagus crowns, horseradish, and rhubarb this month.
- Begin planting perennials, trees and shrubs.
Fertilize
- Fertilize established perennials and ground covers.
- Fertilize evergreens, trees, and shrubs.
- Fertilize lawn.
- Fertilize clematis, irises, and peonies.
Maintenance
- Gradually remove winter protection around roses as new growth
appears.
- Prune rose canes that are weak, crossed, or damaged.
- Divide and transplant crowded summer and fall blooming perennials.
- Clean and aerate lawn.
- Apply pre-emergent weed control in mid-April to mid-May.
- Treat ash and birch trees for borers.
- Spray pines for diseases.
- Spray fruit trees when blossoms fall.
- When new leaves appear, spray crab trees with fungicide to prevent
rust and scab.
- Prune spring flowering shrubs after blooming.
- Prune or mow winter-damaged ground covers.
Pond Care
- Clean out ponds before water temperature reaches 55 degrees (later
cleaning could delay the establishment of a balanced pond ecosystem).
- Start running pumps and filters.
- Add beneficial bacteria.
May
Plant
- Trees, shrubs and perennials
- When transplanting trees, shrubs, and perennials, always use Root
Stimulator
- Sow cool and warm season vegetables and herbs when soil temperature
reaches 60 degrees
- Plant most annual flowers and tender perennials such as cannas,
gladiolus, dahlias, tuberous begonias, and caladiums after frost-free
date (usually after May 10)
- Plant tomatoes and vegetables mid-month
- Transplant vegetable and herb seedlings to garden
- After last spring frost, sow annual flower seeds
Fertilize
- If not completed in April, fertilize evergreens with evergreen
fertilizer
- Fertilize roses with rose fertilizer
- Apply Weed and Feed to lawn mid-month
- Fertilize young trees and shrubs to encourage growth
Maintenance
- Spray weeds in landscape beds with Round-Up every month rather
than waiting until the weed problem is too large
- Spray second application for tip blight on pines
- Complete pruning of spring-flowering trees and shrubs after flowers
fade
- Deadhead bulb blooms, but leave foliage to mature and turn yellow
before removing to aid in nourishing bulbs
- Prune flowering shrubs after flowering
- Start fruit tree spray schedule
- Apply merit for grub control anytime through mid-July
- Use Round-Up along fence line and landscape bed edges to eliminate
trimming
- Start fungicide spray on roses
- Protect hostas from slugs by sprinkling diatomaceous earth or
slug bait around the plant
- Pinch out growing tips of mums when plants are 6" tall
- Stake delphiniums, peonies, and other tall or floppy perennials
when plants are half grown
Pond Care
- Perform annual spring cleanout before water temperature reaches
55 degrees
- Use Microbe-Lift Spring/Summer cleaner to help "jump-start"
your pond
- Use AquaSafe Water Conditioner for newly added water
- Add barley bales early to help reduce algae and clarify water
- Start running pumps and filters
- When water temperature reaches 55 degrees, begin feeding fish
with high carbohydrate / low protein food
- Add oxygenators and hardy rushes. Dormant plants in pond can be
raised later
- Begin UV filtration
- Add beneficial bacterial inoculants to seed pond filter (e.g.
AquaScape's Aquaclearer, Microbe-Lift PL or Tetra AquaZyme)
June
Plant
- Plant balled/burlapped and container-grown trees, shrubs,
ground covers, and annuals.
- Plant perennials all summer long.
- Plant annuals and herbs in containers.
Fertilize
- Fertilize annuals and container plants with water-soluble fertilizer
every two weeks.
- Feed roses with rose fertilizer.
Maintenance
- Water newly planted trees and shrubs deeply every 7-10
days when rain is lacking.
- Apply fungicides to lawns to prevent disease.
- Apply Merit for grub control if it wasn't applied in May.
- Spray junipers and spruce for mites.
- Pinch back mums and annuals.
- Prune maple and birch trees as needed.
- Prune deciduous and evergreen hedges, and spring-flowering trees
and shrubs after bloom. (Do not prune summer or fall bloomers now
or flower buds will be lost).
- Watch for bagworms on evergreens.
- Watch for insects on roses, vegetables and flowers.
- Water lawn at least one inch per week.
Pond Care
- Use low-temperature fish foods until water temperature reaches
60 degrees.
- Keep algae in check by continuing to add bacterial inoculant -
but less frequently as weather gets warmer.
- Add aquatic plants to act as natural filter. Taller plants use
up nutrients that algae need to grow.
July/August
- Discontinue pinching mums by July 4.
- Continue to fertilize every two weeks using water-soluble fertilizer.
- Remove spent blooms and yellowed leaves. Give prolific bloomers
such as cosmos and coreopsis a light shearing. Remove daylily bloom
stalks as soon as flowers fade.
- Use Fung-Onil or Immunox on powdery mildew.
- If deep rooted tree seedlings refuse to budge from perennial beds,
cut each "weed tree" to within a few inches above ground.
Treat the stump with brush killer.
- Dislodge aphids and spider mites with strong spray of water from
garden hose.
- Shear catmint by half after their blooms fade.
- Add fresh mulch to rose beds to help control blackspot fungus
disease.
- Late August - divide iris, peonies, fall bulbs.
- Control insects on roses, flowers, and vegetables as needed.
- Watch for grub damage in lawn. Continue to plant shrubs, vines,
perennials, and container and balled/burlapped trees.
September
Plant
- Plant perennials, vines, and ground covers
- Plant peonies and iris
- Buy spring blooming bulbs after Labor Day
- Begin planting spring blooming bulbs (end of month)
- Plant trees and shrubs
- Plant needle-leaved evergreens
- Seed lawns early in September
Fertilize
- Fertilize peonies with bone meal
- Apply starter fertilizer to newly seeded areas
Maintenance
- Divide and replant summer and fall blooming perennials after blooming
- Aerate lawn and remove heavy thatch
- Water lawns one inch per week
- Kill broadleaf weeds in lawn now with Trimec
Pond Care
- Continue to fertilize plants once a month
- Watch oxygen levels
November/December
Plant
- Plant deciduous trees and shrubs, evergreens and spring
flowering bulbs until the ground freezes.
- Plant an amaryllis bulb in early November for Christmas bloom.
Fertilize
- Fertilize deciduous and evergreen trees, shrubs, bulb
beds, and perennials to promote winter root development (after a
hard frost of 27 degrees or cooler).
Maintenance
- Spray rhododendrons, boxwoods and yews with Wiltpruf (when temperatures
are cool, but not freezing).
- Apply fungicide to areas prone to snow mold mid-to-late November.
- Rake and compost leaves.
- Protect young trees (under 4" in diameter) with tree wrap
or trunk protectors.
- Protect roses for winter with rose collar and fill with mulch
or compost at end of November.
- Mulch rhododendrons and azaleas with cypress, cedar or hardwood
mulch.
- Mulch perennial and bulb beds for winter protection.
Pond Care
- In November, submerge hardy water lilies 3" deep in pond
to prevent freezing.
- Leave fish in pond, remove and discard tropical lilies.
Information
courtesy of Down
to Earth Garden Tips.
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