As July’s high temperatures and humidity settle in, your Southeast Wisconsin garden needs a little extra care to stay lush and productive. From keeping soil moisture consistent to staying ahead of pests and diseases, a few strategic tasks each week will help your plants power through the heat. Here are five essential July tips to maintain vibrant blooms, strong growth, and a healthy, low-maintenance landscape all month long.
Deep, Infrequent Watering
Water early in the morning to reduce evaporation and fungal risk.
Give established shrubs and perennials a thorough soak (1–1½ inches) once a week, rather than light daily sprinkles. This encourages deeper root growth and greater drought resilience.
Stay Vigilant Against Pests & Diseases
Inspect leaves and stems weekly for signs of Japanese beetles, spider mites, or fungal diseases (black spot on roses, powdery mildew on phlox).
Treat early with insecticidal soap or a targeted fungicide to prevent outbreaks from spreading.
Deadhead & Pinch to Extend Bloom
Remove spent flowers on perennials and shrubs (coneflowers, phlox, roses) to encourage new bud formation and maintain a tidy appearance.
For annuals like petunias and geraniums, pinch back leggy growth to promote a bushier habit and continued flowering.
Mulch & Weed Management
Refresh or add a 2–3″ layer of organic mulch (bark, straw, or chopped leaves) around plants to conserve moisture, suppress weeds, and keep soil temperatures stable.
Pull weeds by hand before they set seed—mid-summer weeds can rapidly produce a second generation if left unchecked.
Feed & Support Summer Performers
Apply a balanced, slow-release fertilizer (e.g., 10-10-10) to heavy feeders like roses, hydrangeas, and vegetables to sustain bloom and fruit development.
Stake or cage tall perennials (delphiniums, tall phlox) before they flop under the weight of rain or blooms.
As the heat of early summer settles in across Southeast Wisconsin, your garden is entering one of its most rewarding—and demanding—phases. June brings long days of sunshine, making it the perfect time to establish strong roots, manage emerging growth, and keep pests at bay. By adopting a few simple routines each week, you’ll help your plants thrive through warm days and unpredictable rains. Here are five essential tips to guide your June gardening efforts and ensure your landscape stays healthy, vibrant, and low-maintenance all season long.
Water Early and Deep
Aim to water your garden beds and containers in the early morning (before 9 AM) to minimize evaporation and fungal risk.
Give shrubs and perennials a deep soak—about 1 inch of water—once or twice a week rather than light daily misting. This encourages roots to grow deeper and makes plants more drought-resilient.
Stay Ahead of Weeds
Pull young weeds by hand whenever you spot them; seedlings are far easier to remove before they set seeds.
Apply a 2–3 inch layer of organic mulch (wood chips or shredded bark) around your perennials and shrubs to suppress new weed growth and conserve soil moisture.
Deadhead and Prune Spent Blooms
Regularly deadhead spring-flowering perennials (like peonies and pulmonaria) to tidy appearance and encourage any possible rebloom.
Trim back any early-season flowering shrubs (forsythia, lilac) immediately after bloom to allow new buds for next year’s flowers to form.
Watch for Early Pests and Diseases
Scout leaves—especially on roses, lilacs, and peonies—for signs of aphids or powdery mildew. Treat small infestations promptly with insecticidal soap or neem oil.
Keep foliage dry by pruning overcrowded branches and ensuring good air circulation around your plants.
Feed and Divide Perennials
Apply a balanced, slow-release granular fertilizer (e.g., 10-10-10) to established perennials and new plantings to support summer growth.
If spring-blooming perennials (like hosta, iris, or bleeding heart) have become crowded, lift and divide now—replant healthy sections immediately and mulch to reduce transplant stress.
Plant, Protect, and Prepare for a Successful Season
May is a pivotal month for gardeners in Southeast Wisconsin. With the soil warming and the last frost dates typically passing between May 10 and 20 , it’s the ideal time to dive into planting, maintenance, and preparation for a thriving summer garden. Here are five essential gardening tasks to focus on this month.
1. Plant Warm-Season Vegetables and Annuals
By mid-May, it’s generally safe to plant warm-season vegetables like tomatoes, peppers, squash, cucumbers, and beans. Soil temperatures should consistently reach at least 60°F for optimal growth. This is also the perfect time to add vibrant annuals such as marigolds, petunias, and zinnias to your garden beds and containers.
Planting Tip: Before transplanting seedlings started indoors, harden them off by gradually exposing them to outdoor conditions over a week. This process minimizes transplant shock and enhances their chances of thriving.
2. Divide Overcrowded Perennials
Spring is an excellent time to divide perennials like hostas, daylilies, and ornamental grasses.
Encourages healthier, more vigorous plants
Helps control the size of mature clumps
Provides free plants to expand your garden or share with others
After dividing, water thoroughly and mulch around the new plantings to conserve moisture and reduce stress.
3. Feed Your Plants
The burst of spring growth can quickly deplete soil nutrients. Use a balanced, slow-release fertilizer to nourish your garden beds, shrubs, and trees. Be sure to choose fertilizers appropriate for specific plant needs, such as acid-loving varieties like azaleas and rhododendrons.
Fertilizer Tip: Applying fertilizer just before a rainstorm can help the nutrients seep into the soil more effectively.
4. Prune Spring-Flowering Shrubs After Bloom
Shrubs that bloom in early spring, such as lilacs, forsythias, and viburnums, should be pruned soon after they finish flowering. Proper pruning encourages:
Better shape and structure
More abundant blooms for next year
Removal of any dead or damaged wood
Waiting too long to prune can reduce next year’s flowering.
5. Prepare for Common Pests
As the weather warms, insect pests such as aphids, slugs, and beetles begin to appear. Early preventative measures are important to keep damage minimal without resorting to heavy chemical use.
Pest Management Strategies:
Encourage beneficial insects like ladybugs and predatory wasps
Hand-pick larger pests whenever possible
Use row covers to protect young vegetable plants
Keep garden beds weed-free, as weeds can harbor pests
May is the Month of Opportunity
The work you put into your garden now will pay off all season long. Whether you’re planting new flowers, setting out vegetable transplants, or installing a fountain to create a peaceful retreat, Heritage Hill Nursery is here to help. Stop by for expert advice, fresh plants, and the tools you need to make this your best gardening season yet.
April marks the start of true gardening season here in Southeast Wisconsin. The snow is gone (we hope!), the soil is warming up, and garden centers are bustling with excitement. Whether you’re a seasoned gardener or just getting your hands dirty, this month offers the perfect opportunity to prep, plant, and plan for a thriving season ahead.
Here are five essential April gardening tips to help you start strong:
1. Clean Up Your Beds – But Be Gentle with Pollinators
It’s tempting to go full throttle with your spring cleanup, but take a closer look before clearing leaves and stems. Many beneficial insects — especially native bees, butterflies, and ladybugs — are still sheltering in last year’s plant debris.
🧤 Tip: Start cleaning up around emerging perennials, but leave some areas undisturbed until temperatures are consistently above 50°F. This gives pollinators time to safely wake up and move on.
2. Test and Prep Your Soil
Before diving into planting, give your soil some love. A simple soil test can help you understand your garden’s pH and nutrient levels — a crucial step in making sure your plants thrive.
🧪 You can get a test kit from your local extension office or garden center. 🌱 While you wait for results, work in compost or well-rotted manure to add organic matter and improve drainage.
And don’t forget, early spring is the best time to apply a Pre-Emergent Herbicide, especially when adding soil amendments
3. Plant Cold-Hardy Vegetables & Annuals
Mid-to-late April is prime time for sowing cool-season crops like:
Lettuce
Spinach
Kale
Peas
Radishes
Broccoli and cabbage transplants
You can also start setting out cold-hardy annuals like pansies, violas, and snapdragons, which tolerate chilly nights and brighten up early beds and containers.
4. Prune Shrubs the Right Way
April is a great time to prune certain shrubs — but timing is everything. Use this simple rule:
✂️ Prune summer and fall bloomers now (like spirea, hydrangea paniculata, and potentilla) 🌸 Wait to prune spring bloomers (like lilac, forsythia, and weigela) until after they flower, or you risk cutting off this year’s buds.
Bonus Tip: Don’t prune roses too early! Wait until you see new growth beginning.
5. Mulch Smartly to Suppress Weeds and Lock in Moisture
As the soil warms, adding a fresh layer of mulch can:
Suppress early weeds
Hold in moisture
Regulate soil temperature
Give your beds a clean, finished look
Use 2–3 inches of shredded bark, straw, or leaf mulch, but keep mulch away from the base of plants and tree trunks to prevent rot and pests.
🌼 April is a Month of Momentum
This is the time to get your hands in the soil, take stock of your garden’s layout, and make plans for new plantings. Whether you’re sowing seeds, preparing beds, or simply soaking up sunshine on a garden bench, know that each small step you take now sets the stage for a thriving, beautiful season ahead.
Keep an eye on the forecast, listen to your garden, and don’t hesitate to visit us for expert advice and plant recommendations tailored to our region.
As the temperatures start to dip and the days get shorter, October is a critical month for gardeners in Cedarburg, WI. The fall chill brings new challenges, but it’s also the perfect time to prepare your garden for winter and set it up for a successful spring.
Whether you’re wrapping up the last of your harvest, tending to your perennial beds, or taking steps to protect your plants from frost, there are plenty of tasks to keep you busy. Follow these October gardening tips to ensure your landscape stays healthy through the cold months ahead.
1. Clean Up the Garden
One of the most important tasks for October is cleaning up your garden beds. As plants start to die back, it’s essential to remove any spent annuals, vegetables, and diseased plant material to prevent pests and diseases from overwintering in your garden.
Remove Dead Plants: Pull out any annuals that have finished their lifecycle and dispose of them, especially if they show signs of disease or pest damage.
Cut Back Perennials: Trim back perennials after the first frost, but leave a few seed heads like coneflowers and black-eyed Susans for wildlife. Birds love to snack on the seeds during the winter months.
Weeding: Weeds can still sprout in the cooler weather, so take the time to remove any stubborn weeds before they go to seed. This will give you a head start for next spring.
A clean garden not only looks better, but it also reduces the risk of harboring unwanted pests and diseases that could affect next year’s growth.
2. Prepare Your Soil for Spring
While it may seem like spring is far off, October is an ideal time to start preparing your garden soil for next year. Improving your soil now will give it plenty of time to settle over the winter, resulting in a healthier, more fertile growing medium come spring.
Add Compost: Spread a layer of compost over your garden beds to enrich the soil with organic matter. This will help improve the soil’s structure, water retention, and nutrient content. The freeze-thaw cycles of winter will help work the compost into the soil naturally.
Mulch: Apply a thick layer of mulch around your perennials, shrubs, and trees. Mulch acts as insulation, helping to regulate soil temperature and retain moisture during the winter. It also suppresses weeds and prevents erosion. Choose organic mulches like shredded leaves, straw, or wood chips, which will break down over time and further enrich your soil.
3. Plant Bulbs for a Spring Spectacle
October is the last chance to plant spring-flowering bulbs like tulips, daffodils, hyacinths, and crocuses. These bulbs need to be in the ground before the soil freezes to ensure they get the cold dormancy they need to bloom beautifully in spring.
Choosing Bulbs: Select healthy, firm bulbs for planting. Look for varieties that are well-suited to your climate, and choose a mix of early, mid, and late-season bloomers to extend your spring display.
Planting Depth: A good rule of thumb is to plant bulbs at a depth of about three times their height. For example, a 2-inch bulb should be planted about 6 inches deep.
Group Planting: For the most striking visual effect, plant bulbs in clusters or drifts rather than in straight lines. This will create a natural, flowing look when they bloom.
4. Harvest the Last of Your Fall Vegetables
If you’ve been growing a fall vegetable garden, October is the time to bring in the last of your harvest before the first hard frost.
Cool-Season Veggies: Vegetables like kale, spinach, and broccoli can tolerate light frosts, so they may continue to produce into October. Keep an eye on the weather forecast and cover these crops with row covers or frost blankets if a hard freeze is expected.
Winter Squash and Pumpkins: Harvest winter squash and pumpkins before the first hard frost, as freezing temperatures can damage the skin and affect storage quality. Store them in a cool, dry place to enjoy throughout the winter.
Root Vegetables: Crops like carrots, beets, and parsnips can be left in the ground until the first frost, which actually improves their flavor. However, be sure to harvest them before the soil freezes solid.
5. Protect Your Plants from Frost
In Cedarburg, WI, the first frost typically hits in mid-to-late October, so it’s important to be prepared to protect your more tender plants.
Frost Blankets: Have frost blankets or old bedsheets on hand to cover plants like peppers, tomatoes, and basil if frost is in the forecast. Covering plants overnight can give them a few extra weeks of productivity before the cold shuts them down completely.
Bring Container Plants Indoors: Any tender plants that are growing in containers, such as herbs or tropical plants, should be moved indoors before the first frost. Be sure to inspect them for pests before bringing them inside, and gradually acclimate them to the indoor environment by bringing them in at night and leaving them outside during the day for a few days.
6. Divide and Transplant Perennials
October is an excellent time to divide overgrown perennials and transplant them to new areas of your garden. Dividing perennials not only helps control their size, but it also promotes healthier, more vigorous growth.
When to Divide: If your perennials have become too crowded, or if they are flowering less than usual, it’s time to divide them. Plants like hostas, daylilies, and irises benefit from being divided every few years.
How to Divide: Carefully dig up the plant, being sure to preserve as much of the root system as possible. Use a sharp spade or knife to divide the root ball into sections, each with at least a few shoots and a healthy portion of roots. Replant the divisions immediately and water well to help them settle in.
7. Watering in Fall
Don’t stop watering your garden just because the temperatures are cooler. Trees, shrubs, and perennials need plenty of moisture in the fall to help them survive the winter.
Deep Watering: Water your trees and shrubs deeply, especially if the weather has been dry. This will ensure their roots are well-hydrated going into the winter months. A thorough soaking once a week is usually sufficient.
Winter Drought Protection: In dry winters, evergreens and newly planted trees and shrubs can suffer from winter drought. Be sure they’re well-watered before the ground freezes to minimize the risk of damage.
8. Prepare Your Garden Tools and Outdoor Decor
As gardening season winds down, October is the perfect time to care for your garden tools and protect outdoor decor, especially items vulnerable to winter weather.
Clean and Sharpen Tools: Wash off any soil or debris from your tools, and sharpen blades on pruners, shears, and shovels. Proper maintenance now will extend their life and ensure they’re ready to use in spring.
Store Properly: Keep tools in a dry, sheltered area, and apply a thin coat of oil to metal surfaces to prevent rust during the winter months.
In addition to tools, concrete bird baths, fountains, and other statuary that can retain water should be either wrapped in protective waterproof coverings or moved indoors. Water that remains in these structures can freeze and thaw throughout the winter, causing cracks that compromise their integrity. Protecting them now will prevent damage and ensure they’re ready to enjoy again in the spring.
By following these October gardening tips, you’ll not only protect your plants and prepare them for winter, but you’ll also set the stage for a vibrant, thriving garden come spring. Whether you’re cleaning up, planting bulbs, or harvesting the last of your vegetables, there’s plenty to do to keep your garden in top shape this month. Happy gardening!
September Garden Tips for Cedarburg, WI: Preparing Your Garden for Fall
As the vibrant colors of summer begin to fade, September marks a crucial transition period for your garden. In Cedarburg, WI, this is the perfect time to prepare your landscape for the cooler months ahead while ensuring it remains beautiful and productive. Whether you’re a seasoned gardener or just starting out, these essential tips will help you keep your garden in top shape this September.
1. Plan for Fall Planting
September is ideal for planting cool-season vegetables, perennials, and spring-flowering bulbs. The soil remains warm enough to encourage root growth, and the cooler air temperatures reduce stress on new plants. Here’s what to focus on:
Cool-Season Vegetables: Start planting crops like kale, spinach, lettuce, and radishes in early to mid-September. These vegetables thrive in cooler weather and can even tolerate a light frost. For a continuous harvest, consider planting a succession of crops every couple of weeks.
Perennials: Now is the time to plant perennials such as hostas, coneflowers, and daylilies. Planting them in September allows them to establish strong root systems before the ground freezes, ensuring they return strong in the spring.
Spring-Flowering Bulbs: Prepare for next spring’s floral display by planting bulbs like tulips, daffodils, and crocuses. These bulbs require a period of cold dormancy, so planting them in September gives them plenty of time to settle before winter.
2. Lawn Care: Fertilize and Reseed
Your lawn needs attention as the seasons change. September is one of the best times to fertilize and reseed your lawn in Cedarburg, thanks to the cooler temperatures and increased rainfall.
Fertilization: Apply a fall-specific fertilizer in early September. Fall fertilizers are formulated with higher potassium levels to strengthen roots and improve cold resistance. A healthy lawn in the fall will emerge greener and more vibrant in the spring.
Reseeding: If your lawn has bare or thin patches, September is an ideal time to reseed. The warm soil encourages quick germination, and the cool air reduces stress on young grass. Choose a grass seed mix appropriate for Cedarburg’s climate, such as Kentucky bluegrass or fescue, and keep the soil moist until the new grass is established.
3. Harvest and Preserve Your Summer Crops
September is the time to enjoy the rewards of your summer gardening efforts. Many vegetables and herbs are at their peak, so be sure to harvest them regularly to encourage continued production.
Tomatoes and Peppers: Harvest ripe tomatoes and peppers before the first frost. To enjoy them throughout the winter, consider canning, drying, or freezing them.
Herbs: Gather herbs like basil, oregano, and thyme before the weather turns cold. Preserve their flavor by drying them using a dehydrator or air-drying, or by freezing them for use in winter recipes.
Winter Squash and Pumpkins: As days grow shorter, check your winter squash and pumpkins for ripeness. Harvest them before the first hard frost and store them in a cool, dry place to enjoy throughout the winter.
4. Tend to Your Perennial Beds
Perennial beds require special care in September to ensure they remain healthy and vibrant in the coming year.
Deadheading: Continue deadheading spent blooms on perennials to encourage more flowers and prevent plants from putting energy into seed production. This also keeps your garden looking tidy.
Divide and Transplant: If your perennials have outgrown their space or are becoming crowded, September is a good time to divide and transplant them. This helps rejuvenate the plants and allows you to spread your favorite perennials to other areas of the garden.
Mulch: Apply a layer of mulch around your perennials to help retain moisture and regulate soil temperature as the weather cools. Mulch also suppresses weeds and protects plant roots from freezing temperatures.
5. Prepare Trees and Shrubs for Winter
Trees and shrubs provide structure and beauty to your landscape, so it’s important to care for them as the seasons change.
Watering: Continue to water your trees and shrubs deeply throughout September, especially if the weather is dry. Proper hydration helps them withstand the upcoming winter.
Pruning: Avoid heavy pruning of trees and shrubs in September, as this can stimulate new growth that may not harden off before winter. However, remove any dead or diseased branches to keep your plants healthy.
Protecting Young Trees: If you have young trees, consider wrapping the trunks with tree guards to protect them from sunscald and damage from animals like deer and rabbits during the winter.
6. Compost and Clean Up the Garden
As the growing season winds down, cleaning up your garden is essential to prevent pests and diseases from overwintering.
Remove Spent Plants: Pull up and compost any spent vegetable plants, annuals, and weeds. This reduces the likelihood of pests and diseases carrying over into the next season.
Composting: September is a great time to start or add to your compost pile. Layer garden waste like leaves, grass clippings, and spent plants with kitchen scraps to create nutrient-rich compost for next year’s garden.
Tool Maintenance: After a season of hard work, your garden tools need some TLC. Clean, sharpen, and oil your tools before storing them for the winter. This will help extend their life and ensure they’re ready to go when spring arrives.
7. Enjoy the Fall Blooms
While much of your garden may be winding down, there are still plenty of plants that will bring vibrant color to your landscape in September.
Chrysanthemums: Mums are a fall favorite and come in a variety of colors. Plant them in pots or directly in the ground to brighten up your garden as other plants begin to fade.
Asters: Asters bloom in late summer and early fall, adding a splash of purple, pink, or white to your garden. They’re a great choice for attracting pollinators like bees and butterflies as they prepare for winter.
Sedum: Sedum, particularly varieties like ‘Autumn Joy,’ offers beautiful pink to rust-colored blooms that last well into the fall. Their fleshy leaves add texture to the garden, and they’re incredibly low-maintenance.
8. Consider Cover Crops
If you have a vegetable garden, planting cover crops in September can greatly benefit your soil. Cover crops like clover, rye, or winter wheat help prevent soil erosion, suppress weeds, and add organic matter to the soil when tilled under in the spring, improving soil structure and fertility.
9. Get Ready for Frost
In Cedarburg, WI, the first frost can arrive as early as late September. Be prepared to protect your plants when frost is in the forecast.
Frost Blankets: Have frost blankets or old sheets on hand to cover sensitive plants like tomatoes, peppers, and annual flowers.
Bring Plants Indoors: If you have potted plants or herbs that you want to save, bring them indoors before the first frost. Be sure to check for pests before bringing them inside.
September in Cedarburg, WI, is a pivotal month for gardeners. By taking the time to prepare your garden now, you’ll ensure it remains healthy and beautiful through the fall and is ready to burst back to life in the spring. From planting and harvesting to lawn care and cleanup, these tips will help you make the most of your garden during this transitional season.
