Whether you’re cultivating an expansive garden, a small backyard, or even a balcony, understanding the best plants for your region during these months can make all the difference. Below, we explore options for vegetables, flowers, herbs, and landscape plants that flourish when planted in March and April.

Vegetables To Plant

Peas

Peas thrive in cool temperatures and can be planted as soon as the soil is workable, typically in early March for many zones, including USDA zones 3-7. These legumes prefer temperatures between 45°F and 70°F, making early spring the perfect time for sowing.

To plant peas, sow seeds 1 to 2 inches deep and 2 inches apart. They will germinate in about 7 to 14 days. Peas benefit from support as they grow, so consider installing a trellis or using stakes. As they are sensitive to heat, be sure to harvest them before the temperatures consistently rise above 75°F.

Spinach

Spinach is another leafy green that enjoys cooler weather, and it can be directly sown in the garden from mid-March to early April in zones 3-7. This fast-growing plant thrives best in temperatures between 50°F and 60°F.

For planting, space seeds about 1 inch apart and cover them with about ½ inch of soil. Spinach germinates in 7 to 14 days and can be harvested multiple times by taking the outer leaves, leaving the inner ones to keep growing. If you’d like to extend the growing period, consider staggering your sowing every two weeks.

Kale

Kale, a leafy superfood, is excellent for fall crops but can also be planted in early spring. In USDA zones 3-8, sow seeds outdoors from mid-March to late April to enjoy a fresh harvest in just about 60 days. Kale thrives in temperatures ranging from 45°F to 85°F.

For best results, space plants about 12 to 18 inches apart, as they can grow to be quite large. Regular harvesting encourages new leaf growth, and unlike many other plants, kale’s flavor improves after a light frost, making it a fantastic pick for spring planting.

Carrots

Carrots are a popular root vegetable that can be sown in early March in areas with a favored cooler climate, particularly in USDA zones 3-6. They thrive in temperature ranges of 55°F to 75°F.

When planting carrots, prepare your soil by loosening it to about 12 inches deep. Sow seeds thinly to avoid overcrowding, covering them with about ¼ inch of soil. Germination takes about 10 to 21 days, so keep soil consistently moist. Carrots can be harvested from late spring into summer, depending on the variety planted.

Radishes

Radishes are perfect for early spring sowing and can be planted in March in zones 3-7. They grow rapidly in cooler weather and prefer temperatures from 50°F to 70°F.

Sow seeds about ½ inch deep and space them approximately 1 inch apart. Radishes typically germinate in 5 to 10 days, and they can thrive even in less-than-perfect soil. Harvest them as soon as they reach about 1 inch in diameter for the best flavor, generally in about 4 weeks from planting.

Lettuce

Lettuce is a versatile leafy green and is well-suited for planting from mid-March into April in USDA zones 4-9. It prefers cooler temperatures between 45°F and 65°F.

For optimal growth, sow seeds directly in the garden about ¼ inch deep and 6 inches apart to allow ample room for spread. Lettuce can be harvested as soon as it reaches usable size, often within 30 days, and you can also harvest leaves continuously throughout the season.

Broccoli

Broccoli can be planted in March in zones 3-7 and is best grown in cooler temperatures of 60°F to 70°F. This vegetable takes a bit longer to mature, usually around 70-100 days, but offers a nutritious yield.

To plant, space seeds about 18 inches apart and transplant seedlings outdoors when they are about 4-6 weeks old. Broccoli can thrive in various soil types, just ensure it is well-drained. Consider planting in a location that receives full sun and provide adequate moisture throughout its growth.

Swiss Chard

Swiss chard is a hardy leafy green that can be sown directly from early March through mid-April in most USDA zones (3-8). It grows well in a temperature range of 55°F to 75°F.

For planting, space seeds about 3 inches apart, burying them about 1 inch deep. Swiss chard is quite versatile, and leaves can be harvested continuously after about 6 weeks, making it a productive and attractive addition to the garden.

Turnips

Turnips are a fast-growing root vegetable that can be planted in March in USDA zones 3-6. These roots thrive in cool weather and prefer a temperature range of 45°F to 75°F.

Sow seeds ½ inch deep and space them about 2-4 inches apart. They typically germinate within 7 to 10 days. Turnips can be harvested as soon as the bulbs reach 2-3 inches in diameter for the best flavor, generally within 30-60 days of sowing.

Cilantro (Coriander)

Finally, cilantro, also known as coriander, is an herb that thrives in cooler months and can be sown in March and April across USDA zones 3-9. It prefers temperatures between 50°F and 85°F.

Plant seeds about ¼ inch deep and 1 inch apart. Cilantro grows quickly, usually ready for harvest in about 3-4 weeks when cut at the base for fresh leaves. Note that cilantro bolts quickly in warm temperatures, so early planting ensures a better harvest.

Flowers To Plant

Pansies

Pansies are one of the earliest blooming flowers and can be planted in March in USDA zones 3-9. They are frost-tolerant and thrive in temperatures between 40°F and 65°F, making them perfect for early spring.

Plant pansies in well-drained soil and provide them with full sun to partial shade. Space them about 6 to 8 inches apart to allow room for their vibrant blooms. Pansies can last until the heat of summer, providing colorful displays in gardens and containers.

Snapdragons

Snapdragons are delightful flowers that can be planted from mid-March to early April in zones 4-9. They prefer cooler temperatures of 50°F to 60°F and can handle light frost during their early growth stages.

When planting snapdragons, sow seeds or plant seedlings about 12 inches apart. They grow tall and provide vertical interest to flower beds. Regular deadheading encourages continued blooms throughout the season.

Columbine

Columbine is a perennial flower that thrives in USDA zones 3-8 and can be planted in early March. It tolerates a range of temperatures but prefers around 60°F to 70°F for optimal growth.

Columbine seeds can be sown directly into the garden. Space plants about 12 inches apart, as they can spread. With unique flowers and attractive foliage, they are perfect for naturalized areas and shaded gardens and will return each year with vibrant blooms.

Sweet Peas

Sweet peas are delightful climbers that can be planted in early March in zones 3-7. They thrive in cool conditions, preferring temperatures between 50°F and 70°F.

Sow seeds about 1 to 2 inches deep and provide trellising for climbing. Sweet peas germinate quickly, usually in 7-14 days. Their sweet fragrance and colorful blossoms enhance any garden or trellis, bringing a touch of nostalgia.

Delphinium

Delphinium is an impressive perennial flower ideal for planting in March in USDA zones 3-7. These beautiful blooms like cooler temperatures, between 50°F and 70°F, and are responsive to full sunlight.

When sowing seeds or planting seedlings, space them about 24 to 36 inches apart to accommodate their height. With proper care, delphiniums can grow tall, producing stunning flower spikes that attract pollinators and enhance garden beauty.

Dianthus

Dianthus, also known as pinks or carnations, can be planted in March for a spring bloom in zones 4-9. They prefer cooler weather of 50°F to 70°F and enjoy well-drained soil.

They can be spaced 6 to 12 inches apart, depending on the variety. Dianthus produces fragrant blooms in various colors and are ideal for cottage gardens or as border plants. They also attract butterflies, adding interest to any flower bed.

Marigolds

While often associated with summer, marigolds can be started in April in zones 3-10. They thrive in warmer temperatures, ideally above 60°F.

Marigold seeds can be sown directly outside when temperatures are consistently moderate. Plant them about 6 to 12 inches apart to allow for their full growth. Their vibrant color not only brightens the garden but also helps deter pests.

Zinnias

Zinnias love warm temperatures and can be started in April in most zones from 3-10. They prefer temperatures of 70°F to 90°F.

Plant zinnia seeds about ¼ to ½ inch deep and 4-6 inches apart in full sun for a breathtaking summer bloom. Zinnias grow robust flowers and are easy to maintain, making them a favorite among gardeners seeking colorful summer displays.

Cosmos

Cosmos are ideal for planting in April across USDA zones 3-10, preferring warm weather and thriving in temperatures of 70°F to 90°F.

These flowers are extremely adaptable and grow well in poorer soils. Space them about 12 inches apart, as they can grow tall and need room. Cosmos produce abundant blooms that are beloved by pollinators and make excellent cut flowers for arranging.

Morning Glories

Morning glories, known for their stunning blooms, can be sown in April in zones 3-10. They are warm-weather plants, enjoying temperatures between 60°F to 90°F.

Plant morning glory seeds around ½ inch deep and provide support for their climbing nature. They thrive in full sun and can quickly cover trellises or fences with brilliant flowers that open in the morning and close by afternoon.

Herbs To Plant

Basil

Basil is a tender herb that thrives in warm weather and should be planted in April in USDA zones 5-10. They prefer temperatures of 70°F and above.

Basil seeds can be sown directly into the garden or started indoors for earlier yields. Space plants about 12 inches apart and provide full sun for best growth. Regular harvesting encourages bushier growth, and basil not only enhances culinary dishes but also attracts pollinators.

Parsley

Parsley is a hardy biennial herb that can be planted from late March to April in zones 3-9. It grows best in cooler temperatures of 55°F to 70°F.

Plant seeds ¼ inch deep and space them 8 to 10 inches apart. Parsley can be slow to germinate, taking 14 to 30 days, but once established, it thrives in various soil types and can be harvested perpetually throughout the growing season.

Chives

Chives, with their mild onion flavor, are resilient and can be planted in March in USDA zones 3-9. They thrive in temperatures between 60°F to 75°F, making them perfect for early spring planting.

Plant chive seeds about ¼ inch deep and 12 inches apart. Chives are a perennial herb that can tolerate a range of soil conditions and once established will return each year, providing flavorful additions to many dishes.

Dill

Dill is an annual herb that should be sown directly into the garden in mid-April in zones 3-10. This herb grow best in warmer temperatures, ideally 60°F to 75°F.

Space dill seeds about 12 inches apart, as they can grow tall, and enjoy full sunlight. Dill is a fantastic herb for culinary uses and also attracts beneficial insects, serving a dual purpose in your garden.

Oregano

Oregano is a hardy perennial that can be planted from mid-March in USDA zones 5-10. It thrives in warm weather and enjoys temperatures of 70°F and above.

Seeds should be started indoors or Sow directly outdoors in late spring. Space oregano plants approximately 12 inches apart in a sunny location. Oregano is low-maintenance, drought-resistant, and a staple herb for Italian cuisine.

Thyme

Thyme is a perennial herb that can be planted from mid-March to April in zones 3-10. This herb thrives in warm dry climates, preferring temperatures from 60°F to 80°F.

Space thyme plants about 12 inches apart and make sure to plant them in well-draining soil. Thyme is drought-resistant, making it an excellent choice for xeriscaping, and has a robust flavor that enhances numerous dishes.

Cilantro (Coriander)

As previously mentioned in the vegetable section, cilantro can also be classified as a herb. It is best planted in cool conditions and does well when sown in March to early April in zones 3-9, preferring 50°F to 85°F.

Plant seeds about ¼ inch deep and thin seedlings for optimal growth. Regular harvesting will prevent the plant from bolting, allowing for a longer growing season and refreshing culinary use.

Fennel

Fennel is a unique herb and vegetable that can be planted in April in USDA zones 5-9. It prefers warmer temperatures between 60°F and 75°F.

Fennel should be spaced 12 to 18 inches apart when planted, as it can grow quite large. You can use its fronds in cooking while its bulb develops for a sweet, anise-like flavor, enjoying it in salads or roasted.

Lemon Balm

Lemon balm is a perennial herb that can be planted in April in zones 4-9. They thrive best in temperatures of 60°F to 75°F and enjoy full sunlight.

Plant seeds about ½ inch deep and 12 inches apart. Once established, lemon balm can spread, so naturalizing may require regular division. This fragrant herb is popular for its calming properties and is often used in teas and culinary dishes.

Landscape Plants To Plant In March

Ornamental Grasses

March is a great month for planting ornamental grasses in USDA zones 3-9. These hardy plants are adaptable and prefer a range of temperatures from 30°F to 70°F, making them perfect for early spring planting.

When choosing ornamental grasses, consider varieties like Miscanthus or Panicum. They can be planted in well-drained soil, spaced based on mature size. Ornamental grasses add texture and movement to landscape designs while requiring minimal maintenance.

Dogwood Trees

Dogwoods can be planted from late March to early April in zones 5-9. These beautiful trees thrive in temperatures between 60°F and 75°F.

When planting dogwoods, choose a site with partial shade and amend soil for good drainage. Space tall varieties 20-30 feet apart for optimal growth. Dogwoods provide stunning spring blooms and vibrant fall color, making them invaluable landscape trees.

Boxwood

Boxwoods are evergreen shrubs that can be planted in March in zones 5-9. These versatile shrubs thrive from 30°F to 70°F and are often used for hedges or formal landscapes.

When planting boxwoods, dig a hole twice the size of the root ball and ensure the top of the root ball is level with the ground. Space plants 3 to 5 feet apart depending on desired density. With proper care, boxwoods will provide year-round greenery and structure.

Hydrangeas

Hydrangeas can be planted from mid-March to early April in zones 3-9. They prefer temperatures between 60°F and 80°F and are well-loved for their stunning flower clusters.

When selecting varieties like Endless Summer or Annabelle, plant them in well-drained soil with ample sunlight. Space them 3 to 6 feet apart, considering their mature size. Hydrangeas are beautiful focal points in gardens and can provide brilliant color throughout the seasons.

Japanese Maple

Japanese maples can be planted in March in zones 5-9. They thrive in temperatures ranging from 60°F to 80°F and flourish in partial shade and well-draining soil.

When planting, make sure to dig a hole that is slightly larger than the root ball. Space these trees at least 15 feet apart for adequate air circulation. The vibrant colors of Japanese maples create stunning landscapes, especially in autumn.

Perennials

Perennials can be planted from March through early April in USDA zones 3-9, depending on climate. Plant these resilient flowers in well-drained soil and ample sunlight.

Choose a variety of perennials based on your garden design. Space them appropriately and water them consistently until established. Perennials will bloom year after year, providing a continuous canvas of color and texture.

Flowering Dogwood

Flowering dogwoods can be planted from late March to early April in zones 5-9. They thrive in temperatures between 60°F and 75°F and need well-drained, moist soil.

Plant these trees 20-30 feet apart, as they grow wide. Their gorgeous spring blossoms add beauty to your landscape, and they also attract butterflies, enhancing your garden’s biodiversity.

Lilacs

Lilacs can be planted in March in zones 3-7. They like cooler temperatures and perform best in well-draining soil and full sunlight.

When planting lilacs, give them adequate spacing of about 5 to 10 feet apart. With proper care, lilacs can produce fragrant spring blooms that invigorate the senses, and they are also excellent for attracting pollinators.

Redbud Trees

Redbud trees are stunning additions to any landscape and can be planted in March in zones 5-9. They prefer temperatures between 60°F and 75°F.

When planting redbuds, consider spacing them about 20 feet apart for optimal growth. These trees provide beautiful pink blooms in early spring, making them a popular choice for ornamental planting.

Forsythia

Forsythia is a deciduous shrub known for its brilliant yellow flowers in early spring. Plant these in March in zones 4-8. They prefer well-draining soil and do well in temperatures of 50°F to 75°F.

Space forsythia plants about 3-10 feet apart, as they can spread vigorously. Forsythia makes a striking statement in any garden and is often used as a foundation planting for its rapid fill.