North America Non-native Plant

Retem

Botanical name: Retama raetam

USDA symbol: RERA2

Native status: Not native but doesn't reproduce and persist in the wild

Retem: A Fragrant Mediterranean Beauty for Drought-Tolerant Gardens If you’re dreaming of a garden that whispers tales of Mediterranean hillsides while thriving in tough conditions, let me introduce you to retem (Retama raetam). This enchanting shrub might not be a household name, but it’s certainly earned its place in the ...

Retem: A Fragrant Mediterranean Beauty for Drought-Tolerant Gardens

If you’re dreaming of a garden that whispers tales of Mediterranean hillsides while thriving in tough conditions, let me introduce you to retem (Retama raetam). This enchanting shrub might not be a household name, but it’s certainly earned its place in the hearts of gardeners who appreciate both beauty and resilience.

What Makes Retem Special?

Retem is like that friend who looks effortlessly elegant while being incredibly low-maintenance. This deciduous shrub produces clouds of small, white, intensely fragrant flowers in spring that will make your garden smell absolutely divine. The blooms are followed by silvery-green foliage that creates a lovely backdrop for other plants, and the plant’s naturally graceful, arching branches add architectural interest to any landscape.

But here’s the real kicker – retem is tough as nails once established. We’re talking serious drought tolerance that would make a cactus jealous.

Where Does Retem Come From?

Retem hails from the sun-baked landscapes of the Mediterranean region, North Africa, and parts of the Middle East. It’s perfectly adapted to those classic Mediterranean conditions: hot, dry summers and mild, wet winters.

Should You Plant Retem in Your Garden?

The short answer? It depends on where you live and what you’re looking for. Retem thrives in USDA hardiness zones 9-11, so if you’re dealing with harsh winters, this isn’t the plant for you. But if you live in a warmer climate and you’re battling drought conditions or simply want to reduce your water usage, retem could be a fantastic choice.

However, since retem isn’t native to North America, you might want to consider native alternatives first. Look into native shrubs that offer similar drought tolerance and spring blooms, such as desert willow (Chilopsis linearis) in the Southwest or California lilac (Ceanothus species) on the West Coast.

Perfect Garden Situations for Retem

Retem absolutely shines in:

  • Mediterranean-style gardens where it feels right at home
  • Xeriscape or drought-tolerant landscapes
  • Coastal gardens (it tolerates salt spray well)
  • Erosion-prone slopes where its root system can help stabilize soil
  • Low-maintenance landscapes where you want maximum impact with minimal effort

Growing Retem Successfully

The beauty of retem lies in its simplicity. This plant practically grows itself once you get it established:

Sun and Soil: Give retem full sun and well-draining soil. It absolutely despises wet feet, so avoid heavy clay or areas where water tends to pool. Sandy or rocky soils? Perfect!

Planting: Spring is the ideal time to plant retem. Dig a hole twice as wide as the root ball but no deeper, and backfill with native soil – no need for amendments in most cases.

Watering: Here’s where patience pays off. Water regularly during the first year to help establish a strong root system. After that, you can largely forget about watering except during extreme drought conditions.

Pruning: Retem has naturally good form, so minimal pruning is needed. Just remove any dead or damaged branches in late winter or early spring.

Wildlife and Pollinator Benefits

Those fragrant spring flowers aren’t just pretty – they’re pollinator magnets! Bees absolutely love retem blooms, making this plant a valuable addition to pollinator-friendly gardens. The shrub also provides nesting sites and shelter for small birds.

Size Expectations

Retem typically reaches 6-10 feet tall and equally wide at maturity, though it can be kept smaller with occasional pruning. It’s a moderately fast grower, so you won’t be waiting decades to see results.

The Bottom Line

Retem is an excellent choice for gardeners in warmer climates who want a beautiful, fragrant, low-maintenance shrub that can handle tough conditions. While it’s not native to North America, it’s not invasive either, making it a reasonable choice for appropriate climates. Just remember to consider native alternatives first, and if you do choose retem, you’ll be rewarded with years of spring fragrance and drought-defiant beauty.

Sometimes the best gardens are built not just with plants that belong, but with plants that belong to us – and if retem speaks to your gardening soul, it just might earn its place in your landscape too.

Retem

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Retama Raf. - bridal broom

Species

Retama raetam (Forssk.) Webb & Berthel. - retem

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA