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in Garden· Spring· The Pacific Northwest - PNW· Tips and Tutorials

April Gardening Tips and To-Dos for the Pacific Northwest Region

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Spring has finally arrived and the garden needs a little love. Here are some April gardening tips and to-dos for your Pacific Northwest garden.

April gardening tips and to-dos graphic

I can’t tell you how happy I am that Spring is finally here! I’m looking forward to spending time in the garden and my greenhouse.

April showers bring May flowers, especially in the Pacific Northwest. So put on your raincoat before heading outside because April is one of the busiest months of the year when it comes to gardening.

There is so much to do now that the garden has awoken from a long winter’s slumber, but I actually love being outdoors again so it doesn’t really seem like work.

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hyacinths blooming

April Gardening To-Dos

My “gardening by month” tips for April are based on zone 8b, and my average last frost date is April 18th. If you live in a different hardiness zone, make sure to confirm the frost dates in your area, and plan accordingly.


hardening off plants in April

Hardening Off Seedlings and Overwintering Plants

If you’ve grown seedlings or overwintered plants indoors or in a greenhouse, they will need to acclimate to the outdoor conditions before being transplanted to the garden.

This transition period is called hardening off. This is when you gradually expose the plants to outdoor elements such as rain, sun, and wind.

To find out more information about hardening off your plants CLICK HERE.


adding compost to garden

Prepare Garden Beds

CLICK HERE to read more about preparing your garden beds.

TEST YOUR SOIL

Experts recommend you perform a soil test to check the nutrient and pH level before planting. This will not only give you a better understanding of how your soil will perform but what amendments are needed to be added to the ground.

There are soil test options available. You can buy an inexpensive soil test, or hire a local garden resource center to test your soil conditions.

SHOP SOIL TESTERS HERE.


SOIL PREP

Work the soil when it’s moist to help maintain good air porosity and soil structure. To determine if the soil is ready to work, squeeze a handful into a tight ball, then break the ball apart with your fingers. If the ball of soil readily crumbles in your fingers, the soil is ready to be worked. If the soil stays in a ball, it is still too wet to work.

Soil can be compacted over the winter so it’s important to loosen the soil before planting. Remove rocks or roots using a shovel or garden fork to turn the soil when it’s dry and crumbly.


FEED YOUR SOIL

Compost has many benefits such as improving the soil structure, enhancing soil fertility, helping to retain moisture, and providing nutrients that are needed for healthy plant growth.

Amend your garden beds with 1-3 inches of compost to add nutrients and help retain moisture in the soil this summer.


vegetables growing in raised beds

Garden Planting for the Month of April

April is a great month to plant certain fruits and vegetables in your garden. Here are some of the edibles you can plant in your pacific Northwest garden…

  • beets,
  • carrots
  • broccoli
  • potatoes
  • onions
  • lettuce and salad greens (for a longer salad harvest season, weekly sow lettuce and greens).
  • kale
  • radishes
  • peas
  • fennel
  • blueberries
  • strawberries

Rosemary, chives, oregano, parsley, and mint seedlings can be transplanted outside as soon as the soil is workable.


inside greenhouse with seedlings growing

Start these veggies indoors:

  • cauliflower
  • eggplant
  • peppers
  • tomatoes
  • cucumbers
  • melon
  • pumpkins
  • squash
azalea bloom

Plant new perennials in the April garden.

Rhododendrons and azalea plants as well as bare-root trees, shrubs, and roses can still be planted this month.

Dahlia tubers can go in the ground as soon as the danger of frost is passed. Stake them at the time of planting to avoid injury to tubers.

clematis blooms

Clematis can be planted this month in areas receiving at least 6 hours of sunshine a day. Use an organic mulch or ground cover to shade roots and keep them cool. Plant in rich, well-drained loam.


spring annuals planted in planter

Container Planting

Brighten up the garden by planting flowers in containers.

When planning what you’ll be planting in your container, be sure to combine plants with similar water and light requirements.

Make sure you are planting cold-loving flowers such as pansies, violas, and primroses if you are still experiencing freezing temperatures during the month of April.

If you buy annuals from a nursery or store, make sure they are acclimated to the outdoors before you plant them.


dividing daulilies

Dividing Overgrown Perennials

April is the perfect time to start dividing and transplanting both summer and fall flowering perennials in your garden. These can include phlox, black-eyed Susan’s, daylilies, astilbe, Shasta daisies, and sedum.

daisies and black-eyed Susans ready to be divided

Dividing your perennials will help to keep the plants healthy and prevent crowding, as well as create more plants for other areas in your garden. If you don’t divide certain plants every 3-4 years, they can die out in the center of the plant, leaving a bare hole.

CLICK HERE to read more about dividing your perennials.


dahlia tubers to split

Splitting Dahlia Tubers

Dahlias grow from tuberous roots and are easily propagated by digging them up and dividing the roots. This will not only encourage the plant to produce more blooms but it will be healthier in the long run by separating the healthy tubers from those that are diseased or rotted.

It’s also a good idea to divide dahlias every year because of how quickly the tubers grow. If they get too large, they will rot or become too heavy to lift and store.

CLICK HERE to read more about splitting dahlia tubers.


spring blossoms on tree

Pruning

Prune your spring-flowering shrubs and trees after they have finished blooming, and the flowers fade. Make sure you do this immediately after flowering, so you’re not cutting into next year’s blossoms.

The dead tops of perennials and grasses should also be pruned back to make room for new spring growth. 


cutting back outdoor ferns

Cutting Back Outdoor Evergreen Ferns

If you haven’t already done so, cut your fern fronds down in April to create a fresh new plant for the rest of the year.

CLICK HERE to read more about cutting back your ferns.


April spring garden

Pest and Weed Control

SLUGS

Spring in the Pacific Northwest means that slugs are in full force.

I’m noticing that my primroses are being eaten right now because I didn’t put down slug bait in time to protect them.

I use Sluggo in my garden, which is pet and wildlife safe. However, there are more natural alternatives as well.

PESTS

If you see aphids in your garden, use either a strong stream of water or use safer soap products.


garden needs to be cleaned up

Monthly Maintenance in the Garden

CLEAN UP GARDEN BEDS

April is a good time to clean up garden beds.

Pick up fallen leaves and twigs, and prune dead limbs.

clump of daffodils

LABEL OVERCROWDED DAFFODILS

Label any clumps of daffodils that are getting too crowded so you can dig them up and separate them this summer. Overcrowding can slow down blooming significantly.


TURN COMPOST PILES

Turn over your compost pile to help it break down faster.

tulips growing in raised beds

CLEANING UP SPENT SPRING BULBS

When bulb blossoms die, clip the flowering stems as close to the ground as possible. Let the leaves die gradually so they will build food reserves to support next year’s blooms.

CLICK HERE to read more about when to cut back spring bulb flowers and leaves.

Sow or plant hardy annuals in areas where spring bulbs will die back.


ADDING LIME TO THE GARDEN

Sprinkle garden lime in a circle around the base of lime-loving plants to ensure the pH in the garden will stay alkaline enough.


rhododendron blooms in April

FERTILIZING SPECIFIC PLANTS

You can fertilize plants in April but hold off on feeding spring-flowering shrubs like azaleas, camellias, and rhododendrons until after they have finished flowering.


tulips growing in raised beds

Hopefully, you’ve found some tips you can use in the garden this April. This is such a great time in the Pacific Northwest when the temperatures start warming up and we can finally start seeing some beautiful blooms in our gardens.

CLICK HERE to see last April’s garden post to see what was blooming.

Please leave a comment below. I’d love to hear from you.

Until next time,

Happy April!


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April gardening tips and to dos graphic

More Gardening Posts

15 Deer Resistant Plants for the Garden

Creative Flower Container Ideas For Both Indoors & Out

10 Flowers to Plant For a Low-Maintenance Garden

How to Create a Charming Country Cottage Garden

How and When To Divide Perennial Plants and the Benefits

12 Spring Projects That Will Help Your Summer Garden Thrive


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Filed Under: Garden, Spring, The Pacific Northwest - PNW, Tips and Tutorials Tagged With: April gardening, gardening chores for April, Gardening in the PNW

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Comments

  1. Barbara at Mantel and Table says

    03/31/2022 at 5:57 pm

    I’m in your same zone so all your suggestions were perfect for my garden! I’m hoping to try separating some of my bulbs this year too. Thanks for all the great tips and the inspiration of your gorgeous garden!

    Reply
  2. Stacy says

    03/27/2022 at 5:20 am

    Your gardens already look so good!!!

    Reply

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Hi! I'm Kim. My blog, Shiplap and Shells is about my home, garden, and our Pacific Northwest lifestyle.
I live in a small beach cottage on the Puget Sound with my husband and sweet pups, Lucy, Jax, and Ollie. We have spent the last 9 years, renovating, reinventing, and adding character and charm to our 101-year-old home. Read More…

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