Geranium maderense | giant herb-robert

Regular price: $8.99
Regular price
Sale price: $8.99

Shipping calculated at checkout.

4" pot

order now for FALL 2025 shipping or pickup

Grown from seed in living soil without the use of pesticides, chemicals, or carbon fuels.

Giant herb-robert (Geranium maderense) is an astounding biennial or short-lived perennial geranium. The large, dark green, palmately dissected leaves form a large mound - up to 5'! Pale lilac-pink flowers with dark centers crown the glorious foliage from spring through summer. Plants will likely die out after flowering in their second year, but they self-seed readily and it is easy to maintain a constant supply.

Grow it in full sun or part shade in well-drained soil.

Our plants germinated in March 2025. They will flower next spring/summer.

Cold weather gardeners: This evergreen is only cold hardy to zone 8. It should be brought indoors to a cool, brightly lit location over winter.

Distinctions: Winner of an Award of Garden Merit from the Royal Horticultural Society.

Zone: 8 to 9
Family: Geraniaceae
Type: Tender Perennial
Height: 36 to 60 in.
Spread: 36 to 60 in.
Exposure: full sun to part shade
Conditions: fertile, moist but well-drained
Bloom Time: May to August
Native Range: the island of Madeira

Special Characteristics

Evergreen
Pollinator favorite

image credits

Hedwig Storch , CC BY-SA 3.0 , via Wikimedia Commons
Eric Hunt, CC BY-SA 2.5, via Wikimedia Commons
Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0, via Wikimedia Commons

Ordering information

Preorders

You may place your order anytime to reserve plants for fall 2025 shipment. If you place multiple orders, we will combine plants into one box (or as many as needed) and any extra shipping charges will be refunded.

We will resume shipping plants as soon as temperatures cool in our location and yours.

We will check in with you a week before shipping to make sure you receive your plants at a time that is convenient for you.

Shipping

Live plants ship in spring and fall only. Plants may ship dormant, depending on variety and season. Shipping costs are most reasonable when bundling like size plants.

4-inch: 1-6 plants ship for $15.00 / 7-13 plants ship for $18.00 / 14-30 plants ship for $40.00
1-gal: 1-2 plants ship for $18.00 / 3-4 plants ship for $25.00 / 5-6 plants ship for $40.00
trees & shrubs: $27.00-$40.00 each, height dependent
seeds: $6.75 or free with orders over $15.00

We regret that we cannot ship internationally or to the following states: AK, AZ, CA, CO, FL, HI, ID, MT, NV, OR, UT, or WA.

Nursery pick up

Plants can be collected from the nursery Monday through Sunday from 10am-4pm in Spring, Summer, and Fall. We prefer 24 hour notice to get your order together and will email you when ready for collection.

Plant Sizes

We most commonly use the following pot sizes for perennials:

4-inch pot: 3.5" H x 3.5" W x 3.5" D
2-quart pot: 6" H x 5.25" W x 5.25" D
1-gallon pot: 6.87" H x 8" Dia (this is a true one gallon pot, not the smaller 'trade' one gallon pot used by many nurseries)

Check out our illustrated pot size guide here.

Representative trees & shrubs are photographed in their pots and posted on each plant page.

Sustainability

Sustainability is at the heart of what we do at The Old Dairy. We grow all of our plants outdoors without the use of chemicals, fertilizers, carbon fuels, or peat.

Many of our perennials are grown in the ground and dug upon order (this is especially true for larger sizes). This practice allows us to grow stronger, healthier plants using native soil, and ultimately reduces our impact on the environment.

Our open-pollinated seeds are collected from plants in our mother beds, which have never been treated with chemicals or sprays of any kind.

Read all about our sustainable practices here.