June Gardening Guide: Keep Your Garden Colorful, Healthy & Growing

What’s Taking Root This Month

Your June priorities at a glance.

• Plant blooming hydrangeas, crape myrtles, gardenias, and Rose of Sharon while flower color is easy to see.
• Continue planting gladiolus bulbs through mid-June for a succession of summer blooms.
• Grow basil, oregano, thyme, rosemary, and other culinary herbs near the kitchen.
• Remove spent vegetable plants, improve the soil, and plant second crops.
• Feed flower beds and repeat-blooming plants according to label directions.
• Prune selected arborvitae, junipers, yews, and hemlocks without cutting into bare old wood.
• Remove spring bulb foliage only after it has completely yellowed and died back.
• Divide bearded iris after bloom when clumps become crowded.
• Refresh mulch to conserve moisture, suppress weeds, and moderate soil temperature.
• Water deeply in the early morning rather than applying frequent shallow sprinklings.
• Raise the mower height and keep blades sharp to reduce lawn stress.
• Maintain Bermuda and other warm-season lawns as active growth increases.
• Keep birdbaths clean and feeders stocked during hot weather.
• Plant lantana, salvia, milkweed, echinacea, rudbeckia, and butterfly bush for pollinators.

What You’ll Find in This June Garden Guide

Why June Is an Important Gardening Month

June marks the transition from spring planting into summer maintenance. Temperatures are rising, days are long, and plants are using more water as they produce flowers, foliage, and fruit.

The most important gardening tasks this month are maintaining even soil moisture, reducing heat stress, refreshing mulch, monitoring for pests and disease, and continuing to plant heat-tolerant varieties.

Complete major planting projects early in the month when possible. Newly installed plants can still establish successfully in June, but they require careful watering as temperatures climb.

Plant More Summer Color

Heat-loving annuals and perennials can keep gardens colorful through summer. Choose plants based on the amount of sunlight, soil drainage, and irrigation available.

Color for Sunny Areas

Cora vinca, pentas, purslane, sunflowers, lantana, rudbeckia, echinacea, salvia, heliopsis, and Sunfinity or SunBelievable sunflowers thrive in bright conditions.

Vinca and purslane prefer excellent drainage and may struggle in soil that stays wet. Pentas, salvia, and lantana provide long-lasting flowers while attracting hummingbirds and butterflies.

Color for Shadier Areas

New Guinea impatiens, peace lilies in protected containers, hostas, ferns, coleus, and shade-tolerant begonias can bring color and foliage interest to covered patios and woodland gardens.

Sunflowers for Summer Impact

Traditional sunflowers, branching sunflowers, and compact patio forms provide bold color and valuable pollen. Plant in full sun and provide support for taller varieties.

Plant and Care for Hydrangeas

June is an excellent time to select hydrangeas because many are in bloom. Seeing the flowers makes it easier to compare color, flower form, and mature size.

Endless Summer, Quick Fire Fab, Little Lime Punch, Nantucket Blue, and other hydrangeas have different growth habits and pruning requirements. Confirm the type before pruning.

Watering Hydrangeas

Hydrangeas need consistent moisture during hot weather. Water deeply at the root zone and maintain a two- to three-inch mulch layer.

Temporary afternoon wilting can occur during extreme heat, but plants that remain wilted into the evening may need water.

Sunlight and Pruning

Bigleaf hydrangeas generally prefer morning sun and afternoon shade. Panicle hydrangeas tolerate more sun when moisture is adequate.

Avoid heavy pruning unless the bloom habit is known. Many bigleaf hydrangeas bloom on old wood, while panicle hydrangeas bloom on new growth.

Choose Crape Myrtles

Crape myrtles provide summer flowers, attractive bark, and strong landscape structure. June is an ideal time to choose a variety because bloom color is easy to see.

Select crape myrtles based on mature size rather than pruning them repeatedly to fit a space. Dwarf and compact selections work well near foundations and patios, while larger varieties can serve as flowering shade trees.

Plant in full sun with good drainage. Water deeply during establishment and avoid piling mulch against the trunk.

Avoid Severe Topping

Do not cut mature crape myrtles back to large stubs. Severe topping creates weak shoots, ruins the natural form, and may increase maintenance.

Grow Rose of Sharon

Rose of Sharon is a summer-blooming shrub valued for upright growth and long-lasting flowers. It can be used as a flowering screen, specimen, or narrow vertical accent.

Choose named, well-behaved varieties such as White Pillar, Lady Bug, or other selections chosen for improved form and reduced seed production.

Plant in full sun to light shade with well-drained soil. Water consistently during establishment and allow enough room for mature growth.

Care for Gardenias

Gardenias provide glossy evergreen foliage and fragrant white flowers. Jubilation, Daisy, and other selections vary in mature size and bloom habit.

Plant gardenias in acidic, well-drained soil with morning sun and some afternoon protection. Maintain even moisture without allowing the roots to remain saturated.

Feed with a fertilizer labeled for acid-loving plants when needed. Yellow leaves may be caused by nutrient availability, poor drainage, root stress, or incorrect soil pH.

Continue Planting Gladiolus

Plant gladiolus bulbs every one to two weeks through mid-June to extend the bloom period.

Choose a sunny location with well-drained soil. Plant bulbs in groups for stronger visual impact and provide support for tall flower spikes in windy locations.

Gladiolus flowers are excellent for cutting. Harvest when the lowest flowers begin opening and place stems in clean water.

Grow Fresh Herbs for Cooking

Plant herbs in a sunny location near the kitchen so they are easy to harvest. Basil, oregano, thyme, rosemary, sage, parsley, dill, mint, and chives can grow in beds or containers.

Basil

Basil thrives in warm weather. Harvest often and pinch flower buds to encourage leafy growth.

Rosemary, Thyme, and Oregano

These Mediterranean herbs prefer strong sun and excellent drainage. Avoid keeping the soil constantly wet.

Mint

Mint spreads aggressively and is usually easiest to manage in a container.

Herbs for Pollinators

Allow a few basil, oregano, thyme, dill, and chive plants to flower. Their blooms can provide nectar and pollen for beneficial insects.

Plant Second Crops

As spring vegetables finish, remove spent plants and plant new warm-season crops. Tomatoes, peppers, okra, cucumbers, beans, basil, and heat-tolerant herbs can continue producing through summer.

Remove old roots and diseased plant debris. Loosen compacted soil and blend in finished compost or planting mix.

A starter fertilizer or organic amendment may be incorporated according to label directions. Avoid overfertilizing, especially in hot weather.

Practice Crop Rotation

When space allows, avoid planting the same plant family in the same location repeatedly. Rotation can reduce the buildup of certain soilborne pests and diseases.

Maintain Tomatoes and Peppers

Tomatoes and peppers are actively producing in June and need regular monitoring.

Keep Moisture Consistent

Water deeply at the root zone and mulch around plants. Inconsistent watering can contribute to blossom-end rot, fruit cracking, and reduced production.

Support Growing Plants

Secure tomato stems to cages or stakes and support branches carrying heavy fruit. Avoid tying stems too tightly.

Harvest Frequently

Pick tomatoes, peppers, cucumbers, beans, basil, and herbs regularly to encourage continued production.

Hot peppers such as jalapeño and habanero develop stronger heat as they mature. Wear gloves when handling very hot peppers and avoid touching the eyes or face.

Create a Pollinator Garden

June is an active month for bees, butterflies, hummingbirds, and beneficial insects. A successful pollinator garden includes nectar plants, host plants, water, and shelter.

Reliable Pollinator Plants

Milkweed, lantana, salvia, echinacea, rudbeckia, heliopsis, yarrow, pentas, sunflowers, monarda, butterfly bush, and flowering herbs provide nectar or pollen.

Milkweed also serves as a host plant for monarch caterpillars. Expect leaf feeding as part of the butterfly life cycle.

Provide Water

Use a shallow dish, pollinator puddler, or birdbath with stones that provide safe landing surfaces. Refresh water frequently to prevent mosquitoes.

Protect Beneficial Insects

Avoid broad-spectrum pesticides when pollinators are active. When treatment is necessary, identify the specific pest, select the least disruptive option, and follow the label.

Feed Flower Beds

Annuals, perennials, roses, hydrangeas, gardenias, and container plants may benefit from feeding during active growth.

Use a fertilizer labeled for the plant type and follow application rates carefully. Overfertilizing can burn roots, create excessive leafy growth, and increase water demand.

Water dry soil before applying granular fertilizer and rinse fertilizer from leaves when necessary.

Prune Evergreens Carefully

Arborvitae, junipers, yews, and hemlocks can be lightly shaped in early summer after active spring growth.

Remove dead, broken, or crossing branches first. Make selective cuts that maintain the plant’s natural form.

Avoid cutting arborvitae and junipers deeply into bare brown wood because many conifers will not produce new growth from old leafless stems.

Do not prune during extreme heat or drought, and avoid removing too much foliage at one time.

Clean Up Spring Bulbs and Divide Iris

Remove spring bulb foliage only after it turns completely yellow or brown. The leaves must remain in place long enough to replenish the bulb for next year.

Once foliage dies naturally, cut it near ground level and remove it from the bed.

Divide Bearded Iris

Bearded iris can be divided after flowering when clumps become crowded or flowering declines.

Lift the rhizomes carefully, discard soft or diseased sections, and replant healthy pieces near the soil surface. The upper portion of the rhizome should remain exposed rather than buried deeply.

Mulch for Summer

Mulch helps conserve water, regulate soil temperature, suppress weeds, and reduce soil splashing.

Maintain a layer approximately two to three inches deep. Use pine straw, shredded bark, pine bark nuggets, or another appropriate material.

Keep mulch away from trunks, stems, and crowns. Mulch piled against plants can trap moisture and encourage decay.

Water Deeply and Efficiently

During dry weather, a deep, thorough soaking is usually more beneficial than frequent light sprinkling. Deep watering encourages roots to grow farther into the soil.

Water Early

Water between approximately 6 and 10 a.m. when possible. Early watering reduces evaporation and gives foliage time to dry before night.

Check the Soil

Do not rely only on a fixed schedule. Rainfall, temperature, soil type, wind, mulch, and plant maturity all influence watering needs.

Use a rain gauge or inspect the soil several inches below the surface. Newly planted trees and shrubs need special attention because their roots remain concentrated near the original root ball.

Care for Containers and Pottery

Containers dry quickly in June, particularly hanging baskets and dark-colored pots exposed to afternoon sun.

Check moisture daily and water thoroughly until excess drains from the bottom. Never leave pots standing in water unless the plant specifically prefers wet conditions.

Use a quality potting mix and feed container plants according to label directions. Water-retaining granules may help reduce rapid drying, but they do not replace regular monitoring.

Group plants with similar water and sunlight needs. Consider pentas, vinca, salvia, lantana, mandevilla, succulents, sunflowers, and mixed annual combinations.

Maintain Summer Houseplants

Continue feeding actively growing houseplants monthly or according to the selected fertilizer label.

Houseplants spending summer outdoors may need more frequent watering because of heat and wind. Check soil before watering and make sure containers drain freely.

Pothos and Other Easy Houseplants

Pothos tolerates a range of indoor light conditions and works well in hanging baskets or on shelves. It prefers bright, indirect light but can adapt to lower light.

Peace lilies and ZZ plants also tolerate indoor conditions well. Avoid direct outdoor sun, which can scorch their leaves.

Care for Summer Lawns

Warm-season lawns such as Bermuda, zoysia, and centipede are actively growing in June.

Water in the Early Morning

Water lawns early enough for the grass to dry during the day. Long periods of nighttime leaf wetness can encourage disease.

Raise the Mower Height

Raise the mower blade slightly as summer heat increases. Taller grass shades the soil, supports deeper roots, and can improve drought tolerance.

Keep Mower Blades Sharp

A sharp mower blade creates a clean cut. Dull blades tear grass, leaving ragged edges that lose moisture and may become more vulnerable to disease.

Fertilize Bermuda Appropriately

Continue feeding Bermuda lawns according to local recommendations and soil-test results. Avoid excessive nitrogen, especially during drought or extreme heat.

Monitor for Lawn Disease

Warm, humid weather can encourage fungal disease. Confirm the problem before applying a fungicide and use only products labeled for the turf type and disease.

Lay Sod Successfully

June can be a good time to install Bermuda, zoysia, centipede, and other warm-season sod because the grasses are actively growing.

Prepare the soil by removing debris, correcting the grade, loosening the surface, and adding soil amendments only when needed.

Lay sod tightly with staggered seams, roll it for good soil contact, and water immediately. Keep the root zone consistently moist during establishment without leaving the soil saturated.

Support Backyard Birds

Birds need reliable food and water during hot weather. Keep seed feeders filled with fresh seed and clean them regularly.

Hummingbird feeders should contain one part plain white sugar to four parts water. Replace nectar frequently in hot weather and clean feeders thoroughly.

Keep Birdbaths Clean

Rinse and refill birdbaths often. Scrub away algae and place the bath where birds can see approaching predators.

Use a shallow basin or add stones to provide secure footing. Moving water from a dripper or fountain can help attract birds.

Refresh Outdoor Living Spaces

Patios, porches, and decks become extensions of the home in June. Use furniture, umbrellas, pottery, fountains, statuary, and lighting to create comfortable outdoor rooms.

Bistro sets work well for small patios, while dining groups and deep-seating collections support larger gatherings.

Add planters filled with heat-loving annuals, herbs, succulents, or tropical plants. Repeat colors and materials from the home and garden for a cohesive look.

Plan Your Landscape

June reveals which areas of the landscape become too hot, too dry, too shady, or difficult to maintain. Use these observations to guide future improvements.

A landscape plan can help organize shade trees, flowering shrubs, pollinator plants, lawns, pathways, patios, screening plants, and drainage solutions.

Professional guidance can also help match plants to local conditions, account for mature size, and create a phased installation plan.