Garden Tasks for April
I plant the seed,
You make it grow.
You send the rain,
I work the hoe.
Start seed of
fast-growing annuals indoors such as Zinnias and Marigolds
Sow seeds of hardy
perennials outdoors, such as Cornflower and Larkspur
herbicide, such as “Preen” to reduce spring germinating weeds.
Plant cabbages and onions
Direct-seed peas and
continue succession plantings for lettuce, radishes and spinach
As soil warms, direct-seed beets, carrots, turnips and other cool-season crops.
Cut back over-wintered
sage and lavender, and direct seed or plant other hardy herbs.
As the weather
permits, place over-wintered containers and those started indoors outside
Fill gaps or replace
winter plantings with those for spring and summer
Be prepared to protect
tender plants from possible late frost. Cover with a fabric material, not
Apply 2-3 inches of
organic mulch around new and established plants
Prune young azaleas,
rhododendrons, and wisteria just after flowering to encourage compact growth.
Remove dead and misshapen branches.
Apply a well-balanced
fertilizer, such “Hollytone” to evergreens with yellowing
Pinch off contorted
new growth on pines to remove pine shoot moths.
Plant container roses
anytime until July
slow-release fertilizer, such as “Osmocote” to established roses
Begin weekly sprays to
control black spot and mildew
wood from old garden roses but do not shape or thin at this time.
Start main season
varieties indoors now. There are usually 4-6
weeks of unpredictable weather left before being transplanted outside
Early seedlings sown
indoors may need transplanting to individual pots
fertilizer, compost, over-wintered cover crops, or crop residues into the
Check and clean last
year's cages, trellises, stakes, etc.
preparation, division, and planting
Weed, water and
fertilize with “Osmocote” or “Plant Tone” as-needed
Do not remove foliage
from spring flowering bulbs until it has started to dry-out on its own
Sharpen mower blades
De-thatch and aerate if
not done earlier in spring or previous fall
Apply “Green Power” or
“Preen for Lawns” at the recommended rate
Over-seed with a
variety suitable for your area if not over-seeded last month
Keep moist until seeds
until seed sprout. After 4-6 weeks, treat as an established lawn.
herbicide “Crabicide Green” to established lawns.
Adapted from Reader's Digest "1001 Hints and Tips
for your Garden," 1998.