Garden Scheme

Plant library  ·  Herbs

Roman Chamomile

Chamaemelum nobile

Roman chamomile is a low, mat-forming perennial groundcover that stays about 6 inches tall while gradually occupying a broad, soft-edged layer. Its apple-scented flowers bring interest from early summer into early fall, when flowers can also be harvested. Use it where a planted surface is more useful than bare soil: at the front of herb beds, around the edge of a sunny border, or in small patches beside a patio where its fragrance can be noticed at close range.

  • Pollinator friendly
  • Deer resistant
Sunlight Full Sun
Water Moderate
USDA zones 4–9
Spacing 1 ft
Mature size 0.5 ft tall, 1.5 ft wide
Bloom Early summer - early fall

Placement and use

Set Roman chamomile along the sunny face of a bed, in front of taller herbs or vegetables, rather than behind plants that will shade it. Its low profile suits border edges, rock-garden pockets, and the spaces between larger, upright plantings. Keep the planting outside the main walking line and give it a defined edge beside paths or paving, so its spreading stems can soften the boundary without narrowing circulation. It can also be included near cabbage, cucumber, onion, pea, tomato, and apple plantings.

Spacing and mature footprint

Plant on 12-inch centers for a continuous groundcover pattern. Although each plant can spread to about 18 inches wide, that closer center-to-center spacing lets neighboring mats meet and cover the soil rather than leaving open gaps. In a border, reserve a band at least 18 inches deep for a single row, or use a wider drift where access is available from one side. Do not crowd it beneath dense, taller plants.

Three plants set 1 ft apart, center to center; shaded circles show the 1.5 ft mature spread.

Sun, water, and soil

Use a full-sun position with moderate watering, especially while new plants are knitting together. A well-drained planting area helps keep the low crown from sitting in persistent wetness, making raised bed edges, sandy loam pockets, and gently sloped borders useful locations. Where irrigation reaches the area, avoid placing it at the wettest end of the line; give it its own moderate-moisture zone instead.[1][2]

Seasonal notes

The flowering and harvest window runs from early summer to early fall, so leave the front of the planting accessible for gathering flowers without stepping across the mat. Its evergreen or long-lasting aromatic foliage can continue to mark the bed edge beyond peak bloom in suitable conditions. Trim only as needed to keep the patch compact and prevent it from flowing into paths or neighboring crowns.[1][3]

Growing facts

Botanical name
Chamaemelum nobile
Type
Groundcover
Category
Herbs
Lifecycle
perennial
USDA hardiness zones
4–9
Sunlight
Full Sun
Water
Moderate
Plant spacing
1 ft
Mature size
0.5 ft tall, 1.5 ft wide
Bloom season
Early summer - early fall
Harvest season
Early summer - early fall
Pollinator friendly
Yes
Deer resistant
Yes
Native to North America
No

References

  1. Chamaemelum nobile - Plant Finder — Missouri Botanical Garden
  2. Chamaemelum nobile — Royal Horticultural Society
  3. Chamomile - Chamaemelum nobile — North Carolina Extension Gardener Plant Toolbox

Editorial content updated 2026-07-20.