By Caroline Amidon and Joyce Brobst (Chrissy Moore, editor)
Editor’s Note: The majority of the information provided below was extracted from various presentations and handouts delivered by Caroline and Joyce over many years, with additions from the editor.
If you aren’t familiar with the Pelargonium plant, it’s one you definitely need to add to your garden repertoire! Scented geraniums, the other name by which these beauties are known, were discovered by Europeans in the early 1600s. They spread from the Cape of Good Hope in South Africa to Europe, where their introduction brought about their association with herbs and herb gardens. In their native habitat, they are perennials and often grow into small shrubs.
When introduced into France, Spain, Portugal, and England, they were sought after by wealthy collectors for cottage gardens. By 1790, approximately twenty varieties were being grown. Today, however, they are easily hybridized, and there are many varieties to choose from.
The French distilled their scented oils for the perfume industry, and they became commercially important. In North Africa, large fields were devoted to growing rose-scented types to supplement the “Attar of Rose” oils from the roses grown in Turkey. In recent years, the demand for essential oils has increased, and they are grown on Reunion Island, in Greece, Morocco, and China for this purpose.
Aside from their scent, there is good reason for renewed interest in these adaptable and undemanding plants. They have diverse growth patterns, unusual textures, and foliage ranging in color from green to dusty gray to bright yellow. Most like full sun, mulching, and regular care but will survive with little water and partial shade.
Common leaf scents attributed to this group include: rose, citrus, fruit, mint, or spice. Popular varieties include Pelargonium graveolens (rose), P. crispum (lemon), P. odoratissimum (apple), P. tomentosum (peppermint), and P. ‘Nutmeg’.
We are frequently asked questions about scented geraniums’ personalities and habits, so we have provided some answers for those unfamiliar with this charming group of plants.
Do they bloom?
Yes, but not prolifically so. The name Pelargonium means “stork’s bill” and describes the scented geranium’s long, narrow seed capsule, which forms after flowering. The flowers are small and white, rose, lavender, or mauve in color with darker markings. Most flowers are unscented and sometimes sparse but may attract attention with their special elegance.
Are they poisonous?
No. The flowers, leaves, and extracts have been safely used for centuries; however, some are not desirable for flavoring. Also, because individuals can express allergic responses, normal precautions need to be taken when using them.
Can they be grown in containers?
They are excellent for container gardens. Because of the varied growth habits and versatility of this plant group, Pelargoniums can be selected for growing directly in the garden, in hanging pots, or in a container. Please note that plastic pots are convenient, but Pelargoniums do best in large clay pots and must be watered two or three times a week. It is best to research the growth habit of the type you are considering, since some types stay rather diminutive and will “drown” if planted in a pot that is too large; on the contrary, some varieties grow quite large by the end of the season and will need a larger pot to accommodate that growth so that they don’t dry out too quickly in between waterings.
What kind of care do they require?
If grown in a container, scented geraniums appreciate a well-drained potting mix (not topsoil). It is advisable to feed them regularly with a balanced liquid fertilizer, especially as certain varieties/cultivars can grow quite vigorously during the growing season and will need the added nutrition. If you are less “committed” to a regular liquid feed regimen, mixing in a slow-release fertilizer with the potting mix at planting time will aid the plants’ nutritional needs in between liquid fertilizations. These plants tolerate heavy pruning quite well, so remove dead or unsightly leaves or trim back branches as needed with good pruning shears just above a node (location on the stem where leaves emerge). Most varieties also propagate easily from cuttings, which makes them a great plant for sharing with friends or multiplying for your own garden displays. This also makes them kid friendly if you’d like to show this technique to children in a science class or at home.
Are they beneficial in the garden?
Some gardeners say that beneficial insects, like praying mantids and lady-bird beetles, are attracted to them, but because they are grown primarily for their leaves, they are not considered a “pollinator-attracting” plant.
What uses do they have?
The oils can be used for perfumes or personal hygiene products; the leaves are used to make rose geranium jelly or syrup for flavoring cakes or sugars; the dried leaves are excellent additions to potpourris, sachets, and sleep pillows; and the plants are wonderful in gardens designed for children or the visually impaired. The plants can be shaped into topiaries, standards, or even bonsai.
Where can I buy scented geraniums?
Most retail nurseries or big-box stores don’t carry these great plants, but they should! Occasionally, you’ll see a select few in their herb section. Therefore, the best places to locate them are at local herb growers or herb plant sales, or through specialty catalogs. Many Herb Society of America units around the country conduct such plant sales, and Pelargoniums are often in their inventory. Some examples* of scented geranium growers include, but are not limited to:
- Geraniaceae, California
- Richter’s Herbs, Canada
- Well Sweep Herb Farm, New Jersey
- Sandy Mush Herb Nursery, North Carolina
As you work with these plants, you will want to find more varieties to add to your garden. Many creative uses develop because of their wonderful scents, variety of textures and colors, and their rapid growth. They bring much pleasure and delight to any garden. As you plan your next growing season, we encourage you to add one or many scented geraniums to your garden. We guarantee you will be pleasantly surprised!
*The Herb Society of America (HSA) does not endorse individual businesses. But, if you are seeking additional information, HSA is a great resource for most herb-related inquiries.
Medicinal Disclaimer: It is the policy of The Herb Society of America, Inc. not to advise or recommend herbs for medicinal or health use. This information is intended for educational purposes only and should not be considered as a recommendation or an endorsement of any particular medical or health treatment. Please consult a health care provider before pursuing any herbal treatments.
Photo Credits: 1) Pelargonium ‘Ardwick Cinnamon’ (C. Moore); 2) Pelargonium ‘Attar of Roses’ (J. Adams); 3) Pelargonium ‘Orange Fiz’ (C. Moore); 4) Pelargonium ‘Staghorn Oak’ flowers and Pelargonium panduriforme seedheads (C. Moore); 5) Pelargonium x fragrans in a clay pot (C. Moore); 6) Pelargonium cv. in a mixed container (C. Moore); 7) Pelargonium denticulatum leaves (K. Codrington-White); 8 & 9) Pelargonium cv. in mixed garden bed planting (C. Moore).
Additional References
In the many years that we have been collecting and growing the scented geraniums, we have worked diligently to provide correct nomenclature (the official naming of something) for the species or cultivars we are growing, lecturing, or writing about. The references listed below have reliable nomenclature, which helps when locating a particular plant.
Books
Becker, Jim and Faye Brawner. 1996. Scented geraniums: Knowing, growing, and enjoying scented Pelargoniums. Interweave Press: Loveland, Colorado.
- This is a great book for someone just getting to know the scented Pelargoniums.
Brawner, Faye. 2003. Geraniums: The complete encyclopedia. Schiffer Publishing, Ltd.: Atglen, PA.
- An excellent book providing information on all types of geraniums with background history on the plants.
Crocker, Pat, Caroline Amidon, and Joyce Brobst. 2006. Scented geranium, Pelargonium, 2006 Herb of the Year. Riversong Studios, Ltd.: Ontario, Canada.
- A guide to the history of scented geraniums, commonly grown varieties, and recipes for their use.
Miller, Diana. 1996. Pelargoniums: A gardener’s guide to the species and their hybrids and cultivars. Timber Press, Inc.: Portland, Oregon.
- An excellent reference for the serious grower or collector.
van der Walt, J.J.A. and P.J. Vorster. Pelargoniums of South Africa. (3 Volumes, 1979, 1981, 1988). National Botanic Gardens: Kirstenbosch, South Africa.
- A phenomenal three-volume series for anyone interested in pelargoniums. The illustrations are from original watercolors, which show all the exact features (flowers, leaves, and growth habit) of each plant included. In addition, wonderful descriptions of where these plants thrive in their native habitat of Southern Africa are clearly stated for each plant. This series is generally available in research libraries.
Periodicals
Amidon, Caroline, and Joyce Brobst. 2001. “Fun with Pelargoniums.” The Herbarist. Issue 67. The Herb Society of America.
Amidon, Caroline, and Joyce Brobst. 2005. “Heaven scent, a world of fun with Pelargoniums.” Green Scene. Pennsylvania Horticultural Society.
Amidon, Caroline, and Joyce Brobst. 2005. “To grow Pelargoniums is to know them.” The Herbarist. Issue 71. The Herb Society of America.
Caroline Amidon (now deceased) was Past President of The Herb Society of America (1996 -1998). She was awarded the Helen de Conway Little Medal of Honor from The Herb Society of America (2002), as well as The Nancy Putnam Howard Award for Horticultural Excellence (2005). Caroline was an honorary member of both The Philadelphia Unit and the PA Heartland Unit of The Herb Society of America. Caroline held various offices in and served on many committees for the Philadelphia Unit of HSA, as well as participated in the HSA registered plant collections program (Pelargonium species) and authored or co-authored numerous articles and texts.
Joyce Brobst is a Past President of The Herb Society of America (1998-2000). She was awarded the Helen de Conway Little Medal of Honor (2006) and the Nancy Putnam Howard Award for Excellence in Horticulture (2011). Joyce, an honorary member of both the PA Heartland Unit and Philadelphia Unit, has held offices and served on committees for both units. She is a Founders Circle member and is GreenBridges Garden certified. She, along with Caroline, has participated in the HSA registered plant collections program (Pelargonium species) and has authored or co-authored numerous articles and texts over the years.