Rosemary loves heat, which sounds perfect for Alabama. Then July arrives with warm nights, heavy air, afternoon thunderstorms, and soil that stays damp longer than expected. A plant that looked fine in May suddenly browns from the center and collapses.

The problem is rarely that rosemary cannot take our sun. It is usually a root-zone and airflow problem. This Mediterranean herb wants bright light, lean soil, quick drainage, and room to dry. In Alabama, success comes from giving it the driest little corner of the garden rather than treating it like basil or mint.

Drainage Matters More Than Almost Anything

Rosemary roots need oxygen. Heavy clay that holds winter rain and summer irrigation can suffocate them, inviting root and crown rots. If water stands in the planting hole or the soil remains sticky days after a storm, choose another site.

A raised bed, broad mound, or large container is often the simplest answer. Amend the entire planting area rather than filling one deep hole with fluffy potting soil. A sharply different pocket can collect water at the clay boundary and create the very bathtub you were trying to avoid.

For containers, use a potting mix made for excellent drainage and a pot with generous holes. Do not put gravel in the bottom as a substitute for proper mix and drainage. Elevate the pot slightly if water cannot escape beneath it.

Give It Full Sun and Moving Air

Rosemary is most compact and flavorful in full sun. Six to eight hours is a good target. Shade encourages stretched growth and slows drying after rain, which is a poor combination in humid weather.

Space plants so branches do not press against a wall or neighboring shrub. Air movement through the canopy is especially valuable during rainy periods. A hot masonry wall can be useful in winter, but a cramped corner with reflected heat and no circulation may stress the plant in summer.

Upright types usually handle garden beds better than low trailing forms, which can hold damp foliage close to the soil. Trailing rosemary is excellent in a pot or over a wall where stems stay dry.

Plant High, Not Deep

Set rosemary at the same depth it grew in the nursery pot, or slightly high in heavy soil. Never bury the woody crown. Loosen circling roots gently and spread them outward into the prepared area.

Backfill, water once to settle the soil, and leave the crown exposed. Use a thin mineral mulch such as small gravel where appropriate, or keep organic mulch several inches away from the base. Pine straw piled against the crown can trap moisture.

Spring planting gives roots time to establish before winter, but avoid installing a tender greenhouse plant just before a week of intense heat. Harden it gradually to full sun.

Water Deeply, Then Let the Soil Breathe

New rosemary needs consistent moisture while roots move into the surrounding soil. That does not mean daily watering. Soak the root zone, then wait until the upper soil begins to dry before watering again.

Established plants tolerate drought better than constant wetness. In a normal Alabama summer, rainfall may supply plenty. Check the soil with a finger or trowel rather than watering because the calendar says Tuesday.

Containers dry faster and may need frequent attention during hot, windy weather. Water thoroughly until excess drains out, then empty saucers. A small splash that wets only the surface encourages shallow roots.

Feed Lightly

Rosemary does not need rich soil. Heavy nitrogen creates soft, floppy growth with weaker flavor and can make the plant more vulnerable to stress. A modest spring feeding or a little finished compost is usually enough in the ground.

Container plants need nutrients because water leaches the mix, but use a diluted, balanced fertilizer rather than pushing rapid growth. If leaves are pale, first inspect drainage and roots. A waterlogged plant cannot use fertilizer properly.

Test garden soil before adding lime. Rosemary tolerates a range of conditions, but correcting pH by guesswork can cause new imbalances.

Prune for Airflow and New Growth

Harvesting is a form of pruning. Snip green tips regularly to encourage branching and keep the plant compact. Make cuts just above a leafy joint.

Avoid cutting deeply into old bare wood unless you know the branch still has live buds. Rosemary does not always regenerate from leafless stems. Renovate an overgrown plant gradually, removing no more than about one-third at a time.

After flowering, shape the plant and thin crowded interior stems. Remove dead wood whenever you see it. Clean pruners between diseased plants so you do not carry problems across the herb bed.

Reading Brown Leaves Correctly

Brown rosemary can mean drought, root rot, freeze injury, transplant shock, or physical damage. The soil and stem tell the story. A dry pot with crisp tips needs water. A wet pot with dark, soft stems and an unpleasant root smell points toward rot.

Yellowing followed by interior browning often appears when roots stay wet. Move container plants out of constant rain, improve drainage, and reduce irrigation. Severely rotted roots may not recover, so take healthy tip cuttings while green material remains.

Spider mites can cause stippling and bronzing during hot, dry periods, especially on sheltered porch plants. Shake a branch over white paper and look for tiny moving specks. Strong water sprays and improved plant health often help with light infestations.

Winter Is a Different Kind of Wet

Rosemary may survive many Alabama winters in the ground, but cold tolerance varies by variety and site. North Alabama gardeners should select hardy forms and place them in a protected, well-drained location. Cold, saturated soil is often more damaging than cold air alone.

Before a hard freeze, water dry soil but do not saturate it. Cover small plants with frost cloth that reaches the ground, then remove or vent it when temperatures rise. Avoid pruning heavily in fall, which encourages tender growth and reduces the plant’s protective canopy.

Container rosemary is more exposed because roots are above ground. Move pots against a protected wall or into an unheated bright space during severe cold. Do not bring a wet plant into a dark, warm room for weeks and expect it to be happy.

Take Cuttings as Insurance

Rosemary roots readily from firm green tip cuttings. Remove lower leaves, insert stems into a clean, well-drained medium, and keep them bright but out of harsh direct sun while roots form. Moist is enough; soggy cuttings rot.

A few rooted backups are useful after an unusually wet summer or sharp winter freeze. They also preserve a favorite plant that has proven itself in your yard.

Treat Rosemary Like Rosemary

Most rosemary failures happen because the plant receives rich soil, frequent water, heavy mulch, and crowded shelter—the same care that makes other herbs flourish. Give rosemary the opposite. Put it in sun, lift its crown above wet soil, water thoroughly but not constantly, and keep air moving through the branches. In Alabama humidity, a little intentional neglect is often exactly what it needs.