Utah County: Best Full Sun Perennial Plants

Introduction to Best Full Sun Perennial Plants

Utah County gardeners know that hot, sunny days are part of life along the Wasatch Front. Finding the best full sun perennial plants ensures that your garden thrives despite intense sunlight and alkaline soils.

In this article we explore why full‑sun perennials are essential for Utah landscapes and how to choose the right ones. We’ll look at the soil conditions, watering needs and design principles that help the best full sun perennial plants flourish.

Utah’s climate ranges from high deserts to mountain valleys, producing long, dry summers and short, cold winters. Many gardeners struggle with soil that is clay‑heavy and alkaline, but full‑sun perennials such as lavender and yarrow are naturally adapted to these conditions. By focusing on the best full sun perennial plants suited to Utah’s climate, you can create a vibrant yard that requires less maintenance and water.

Full‑sun perennials provide year‑after‑year beauty, making them a smart investment for homeowners. They offer color, structure and pollinator habitat while tolerating drought once established. In the sections below we’ll share recommended species and cultivation tips so that your landscape thrives in the blazing sun.

Soil and Site Preparation

Before planting any best full sun perennial plants, take time to prepare the site properly.

Utah soils tend to be alkaline (around pH 8) and low in organic matter.

Improving soil structure with compost enhances moisture retention and helps roots penetrate clay. For example, when growing English lavender you should incorporate about one inch of coarse compost 4‑8 inches deep into the soil. Amending soil this way benefits all full‑sun perennials and reduces the need for frequent watering.

Good drainage is just as critical. Many of the best full sun perennial plants dislike wet feet; lavender in particular thrives in well‑drained soil and does poorly in wet conditions. If your yard has compacted clay, consider building raised beds or mounds to promote drainage.

Position plants in locations that receive at least six hours of direct sunlight per day. Most of the species discussed here will reward you with abundant blooms and foliage when given ample sunlight.

Finally, space plants appropriately to allow air circulation and prevent overcrowding. Planting too closely can lead to disease and poor growth, especially in clay soils. Mulching helps conserve moisture and regulate soil temperature while suppressing weeds. A two‑ to three‑inch layer of organic mulch reduces water loss and moderates soil temperatures.

Add fresh mulch annually to replenish organic matter and maintain moisture, making your best full sun perennial plants thrive.

Designing a Water‑Wise Full‑Sun Garden

Creating a cohesive full‑sun garden is about more than picking individual plants. When choosing the best full sun perennial plants, consider height, width, shape, color and seasonal interest to achieve your design goals.

Group plants into “hydrozones,” placing those with similar watering needs together; this makes irrigation more efficient and reduces water waste. For example, pair drought‑tolerant plants like yarrow and Russian sage in one area, and reserve moderate‑water plants for another.

In Utah County, water conservation is especially important. The USU Water‑Wise program recommends selecting plants adapted to soil, water, temperature, light and pest conditions to minimize maintenance and irrigation.

Many best full sun perennial plants are naturally drought tolerant and can thrive with deep, infrequent watering once established. To maintain soil moisture, apply organic mulch or gravel around plants; mulch reduces evaporation and helps keep roots cool.

While water efficiency is key, aesthetics matter too. Arrange plants in layers, with taller perennials at the back and shorter groundcovers at the front. Contrast foliage shapes and colors—mix spiky leaves with rounded ones, silver foliage with deep green—for visual interest.

By grouping the best full sun perennial plants thoughtfully, you’ll create a garden that is both water‑wise and beautiful.

Lavender: Aromatic and Drought‑Tolerant

English lavender (Lavandula angustifolia) is one of the best full sun perennial plants for Utah gardens. It thrives in full sun and well‑drained soil; in fact, lavender performs poorly in wet conditions.

The plant’s aromatic foliage and purple flower spikes attract pollinators and repel pests, making it both beautiful and practical. Lavender flowers can be dried for crafts or culinary uses, adding another layer of value to your landscape.

To grow lavender successfully in Utah County, amend soil with coarse compost and ensure excellent drainage.

Add approximately one inch of compost and incorporate it 4–8 inches deep to create the loose, gravelly soil lavender prefers.

Plant lavender in raised beds or mounded rows if your soil is heavy clay; this prevents root rot.

Once established, lavender needs only occasional watering, making it an ideal choice for water‑wise gardens.

Lavender’s adaptability and low‑maintenance nature make it a must‑have among the best full sun perennial plants. Its silvery foliage provides year‑round interest, and its fragrant blooms can be harvested for essential oils or sachets.

For best results, prune plants lightly after flowering to maintain shape and encourage new growth.

Russian Sage: A Pollinator Magnet

Russian sage (Perovskia atriplicifolia) is a striking, drought‑tolerant shrub that earns its place among the best full sun perennial plants. This hardy plant thrives in full sun, tolerates drought and requires little water once established.

Its tall, airy stems bear clouds of violet‑blue flowers from summer through fall, attracting bees, butterflies and hummingbirds. The aromatic foliage also deters pests and deer.

For the best results, plant Russian sage in well‑drained soil and give it plenty of space—up to four feet wide and tall.

It prefers poor soils and can even tolerate salt and alkaline conditions, making it perfect for Utah County gardens.

Minimal maintenance is required; simply cut back old stems to about a foot in early spring. Because Russian sage is deer‑resistant and drought‑tolerant, it’s an excellent companion for other best full sun perennial plants like coneflowers and yarrow.

In design, use Russian sage as a backdrop or a focal point. Its airy habit pairs well with grasses and sturdier perennials. You’ll appreciate its low water needs and long bloom season, ensuring months of color in your landscape.

Yarrow: Tough and Deer‑Resistant

Yarrow (Achillea spp.) offers feathery foliage and flat clusters of brightly colored flowers, making it a standout among the best full sun perennial plants.

Yarrow thrives in sunny spots and poor soil and is highly drought tolerant. Once established, it requires little water and is deer‑resistant, helping to minimize damage from wildlife.

Yarrow’s adaptability makes it ideal for Utah County gardens. It tolerates a wide range of soil types, including clay and sandy soils, and even improves with neglect. Because yarrow spreads moderately by rhizomes, space plants about 18 inches apart to allow for natural expansion.

Deadhead spent blooms to encourage repeat flowering and prevent excessive reseeding. Grouping yarrow with other best full sun perennial plants such as Russian sage and lavender creates a cohesive, low‑water landscape.

In addition to its resilience, yarrow is an excellent pollinator plant. Its flat flower clusters provide a landing platform for butterflies and beneficial insects. Choose cultivars with white, yellow, pink or red blooms to complement your color scheme.

Yarrow’s fern‑like foliage adds texture to borders and rock gardens, enhancing the overall design of your full‑sun planting.

Coneflowers: Color and Resilience

Coneflowers (Echinacea spp.) are beloved in Utah gardens for their bright, daisy‑like blooms and robust nature. These plants thrive in full sun and adapt well to Utah’s alkaline soils.

Drought tolerance is another reason they rank among the best full sun perennial plants. Coneflowers also provide nectar for butterflies and seed heads for birds in fall and winter, making them valuable wildlife plants.

To grow coneflowers successfully, plant them in well‑drained soil with plenty of sunlight. They prefer slightly lean soils; too much fertility can result in floppy stems. Once established, coneflowers are low maintenance—simply cut back dead stalks in late winter or early spring.

Their ability to thrive with minimal water makes them ideal companions for other best full sun perennial plants.

Coneflowers come in many colors, including purple, pink, white, yellow and orange. New varieties have double flowers or unique shapes, allowing you to create striking combinations.

Plant them en masse for a bold statement or mix them with grasses and herbs for a naturalistic look. Their long bloom season provides months of color, making coneflowers indispensable in any full‑sun garden.

Black‑Eyed Susans: Cheerful Blooms

Black‑eyed Susans (Rudbeckia spp.) are quintessential prairie flowers that thrive in Utah’s full‑sun gardens. These sunny perennials flourish even at high altitudes and create pollinator‑friendly gardens.

They are adaptable and considered among the best full sun perennial plants because they bloom for weeks and require little attention once established.

Plant black‑eyed Susans in well‑drained soil and give them room to spread. Deadhead spent flowers regularly to encourage continuous bloom and prevent self‑seeding.

The golden petals and dark centers provide a strong visual contrast, brightening borders and meadows alike.

These plants are also favored by bees and butterflies, further enhancing the ecological value of your garden. Black‑eyed Susans pair beautifully with purple coneflowers, Russian sage and grasses.

Their low‑maintenance nature and cheerful color make them an easy addition to any full‑sun planting.

With proper soil preparation and occasional division, they’ll return year after year as one of your best full sun perennial plants.

Sedum and Stonecrop: Succulent Survivors

Sedum (stonecrop) species are masters of survival in dry, sunny conditions. Many varieties are tough, drought‑resistant plants that thrive in poor soils and need minimal watering.

This resilience places them firmly among the best full sun perennial plants for Utah landscapes. Sedum’s fleshy leaves store water, allowing it to withstand the scorching sun and prolonged drought.

Low‑growing sedums make excellent groundcovers, spreading over rocks and between pavers. Upright varieties such as Sedum ‘Autumn Joy’ produce clusters of pink flowers that age to copper, attracting pollinators late in the season.

Plant sedums in gravelly or sandy soil, and avoid overwatering; excess moisture can cause rot. Because they require so little maintenance, sedums are ideal companions for other drought‑tolerant species on our list of best full sun perennial plants.

Sedums also provide year‑round interest. Even when not in bloom, their succulent foliage offers texture and color—ranging from blue‑gray to chartreuse and burgundy. In winter, dried flower heads add structure to the garden.

Use sedums to soften the edges of pathways, fill gaps in rock gardens or create living roofs on low structures.

Blanketflower and Other Notable Perennials

Blanketflower (Gaillardia x grandiflora) is another star among the best full sun perennial plants. This hardy native features large, multicolored flowers that bloom continuously from late spring through fall.

Blanketflowers prefer full sun but will perform adequately in light shade and thrive in moderate to dry soils, making them perfect for water‑wise gardens.

They also attract bees and butterflies, contributing to a healthy ecosystem.

In addition to blanketflower, many more perennials thrive in Utah’s full sun.

The USU Water‑Wise Plants list includes drought‑tolerant species such as catmint (Penstemon and Nepeta), Russian sage, yarrow, Utah Lady Finger (potentilla), Gaura, and daylilies.

These plants vary in height, texture and flower color, offering endless combinations for gardeners. Selecting a mix of early, mid and late‑season bloomers ensures your yard stays vibrant throughout the growing season.

When assembling your garden, reference the USU list of perennials for full sun. Many of these species share traits of drought tolerance, hardiness and low maintenance, which are essential for the best full sun perennial plants.

Pair them thoughtfully to create layers of color and texture, and take advantage of their resilience to build a sustainable landscape.

What Now? 

Creating a thriving landscape in Utah County’s intense sun is not only possible—it’s rewarding.

By selecting the best full sun perennial plants, preparing soil properly and designing with water‑wise principles, you can enjoy a lush, colorful garden that supports pollinators and requires minimal care.

From aromatic lavender to resilient yarrow and show‑stopping blanketflower, these plants are proven performers in our climate. Thoughtful design and proper maintenance will help them flourish year after year.

Are you ready to transform your sunny yard into a low‑maintenance oasis? Start by selecting a handful of the plants highlighted in this guide and incorporate them into your design. If you need expert guidance, our team at Sable Hills Landscaping specializes in garden design and plant recommendations. 

Contact us today to discover which of the best full sun perennial plants will thrive in your yard and learn how our services can help you create a beautiful, water‑wise landscape.