Foxglove
A dramatic biennial or short-lived perennial with tall spires of bell-shaped, spotted flowers beloved by bumblebees.
On this pageOverview
Meet Foxglove
A dramatic biennial or short-lived perennial with tall spires of bell-shaped, spotted flowers beloved by bumblebees. All parts of foxglove are highly toxic if ingested, so site carefully away from children and pets. They self-sow readily in partly shaded woodland gardens and provide striking vertical accents in cottage borders.
When to plant Foxglove
Scatter the tiny seeds on the surface of moist seed-starting mix without covering, as they need light to germinate. Maintain a temperature of sixty to sixty-five degrees Fahrenheit and keep consistently moist. Germination takes fourteen to twenty-one days. Transplant seedlings to individual pots when they have two true leaves and grow on in a cool, bright location. Plant out in autumn for flowering the following summer, or start in midsummer for the same result. First-year blooming varieties like the Camelot series should be started indoors in late winter.
Your Foxglove Year
Composed for Zone 7 · typical seasons · frost passes Apr 2, returns Nov 1
Sow Foxglove Mar – Apr, Sep, pick May – Jul. Set your climate below and every date on this plate re-times itself.
How to grow Foxglove
Foxgloves thrive in partial shade beneath deciduous trees or along the north side of buildings where they receive dappled light. They tolerate full sun in cooler climates if the soil stays consistently moist. Prepare the planting area with generous amounts of leaf mold or compost to create the humus-rich, moisture-retentive soil they prefer, with a pH between 5.5 and 6.5.
As biennials, foxgloves produce a rosette of large, fuzzy leaves in their first year and flower in the second. Allow some seed pods to mature and scatter naturally for a self-sustaining colony that blooms every year. Water regularly during dry spells, delivering moisture at soil level to keep the hairy leaves dry and prevent fungal problems.
Caution: all parts of foxglove are highly poisonous and contain cardiac glycosides. Wear gloves when handling and site plants away from areas frequented by children or pets. Despite their toxicity, foxgloves are invaluable for attracting bumblebees, which crawl deep into the tubular flowers for nectar and emerge dusted in pollen.
10 plants fit a 4 × 8 ft bed
Each Foxglove wants 45 cm of elbow room. The planner keeps that spacing for you — every plant, every bed.
Foxglove's best neighbours
Foxgloves are natural woodland edge plants and combine beautifully with hostas, ferns, astilbe, and bleeding heart in shaded borders. Their tall spires provide vertical drama behind low-growing shade perennials. Plant among roses and hollyhocks in cottage gardens for an English country feel. They work well interplanted with spring bulbs, as foxglove foliage fills the gap when bulb leaves fade.
Hosta belongs beside it.
Old growers' knowledge, checked against Foxglove's real companion table below — test any plant you're growing.
Feed it well
Foxgloves prefer moist, humus-rich, slightly acidic soil with a pH of 5.5 to 6.5. Amend planting areas with generous quantities of leaf mold, peat substitute, or compost. They do not require heavy feeding. Apply a light top-dressing of compost in spring and a single application of balanced organic fertilizer as flower stalks begin to elongate. Avoid high-nitrogen feeds that promote lush foliage at the expense of flower spikes. Mulch annually with composted bark or leaf mold.
Ideal Temperature
Hardiness Zone Compatibility
From seed to harvest, stage by stage
Seed Sowing
Foxglove seeds are extremely fine, almost dust-like. Sow them on the surface of moist, well-drained seed compost without covering, as they require light for germination. Press gently to ensure good seed-to-soil contact. Germination occurs in 10 to 21 days at temperatures between 15 and 20 degrees Celsius.
Seedling Establishment
Tiny seedlings emerge with small rounded cotyledon leaves. Growth is slow initially. Once two or three pairs of true leaves develop, seedlings can be pricked out and transplanted into individual pots or thinned to 30 centimeters apart in the garden bed.
Rosette Formation (Year One)
As a biennial, foxglove spends its entire first year developing a large basal rosette of broad, softly hairy leaves. The rosette can reach 30 to 45 centimeters across by autumn. Energy is stored in the thick taproot to fuel the following year's dramatic flower spike. No flowers appear in this stage.
Bolting and Flower Spike Development
In spring of the second year, a strong central flower stem elongates rapidly from the center of the rosette, reaching 90 to 150 centimeters tall. The spike is densely packed with tubular buds arranged in a one-sided raceme, opening sequentially from the bottom upward over several weeks.
Full Bloom
The flower spike is fully open, displaying dozens of pendant, bell-shaped flowers in shades of purple, pink, or white, each with distinctive dark spots inside the throat. Bumblebees visit frequently, crawling entirely inside the blooms. The flowering period lasts three to four weeks as new flowers continue to open toward the tip.
Seed Set and Dispersal
After pollination, each flower develops a dry capsule containing hundreds of tiny seeds. A single spike can produce well over one hundred thousand seeds. The capsules dry and split open, releasing dust-fine seeds that are dispersed by wind and rain. The parent plant dies after setting seed, completing its biennial life cycle.
Self-Seeding and Colony Renewal
Seeds that have fallen germinate in late summer and early autumn, forming tiny rosettes that will overwinter and flower the following year. Over time, a well-established planting creates a self-sustaining colony with plants at different stages, ensuring flowers every year despite each individual plant being biennial.
Do not cover seeds with soil. Mist the surface gently to keep it moist without dislodging the tiny seeds. A clear plastic cover helps maintain humidity during germination.
Caring for Foxglove month by month
What to do each month for your Foxglove
July
You are hereNo specific care tasks for this month.
Know exactly what to do in your garden — every month
One email at the start of each month: what to sow, plant, and tackle right now — for your Foxglove and everything growing around it. Plus a short starter course that helps you dodge the classic mistakes.
- What to do, right now
- Matched to your season
- Starter course included
Harvesting Foxglove
Cut foxglove spikes for indoor arrangements when the lower quarter of flowers have opened. Cut in early morning and place immediately in deep water. Note that all parts of the plant are toxic, so wash hands thoroughly after handling and keep cut flowers away from food preparation areas. To encourage a second, smaller spike, cut the main stalk back to the rosette after flowering but before seeds set. Allow some plants to go to seed for perpetuating the colony.
assuming you sow when the window opens — set your real date
Pick Foxglove promptly and the plant keeps producing.
Storage & Preservation
Fresh-cut foxglove spikes last about a week in a vase with clean water. They do not dry well for arrangements due to their fleshy texture. Seeds can be collected by cutting the mature brown seed pods and shaking them into a paper bag. Store seeds in a cool, dry place in labeled envelopes for up to two years. Foxglove foliage should never be used in any herbal preparations due to its high toxicity.
What goes wrong — and the fix
Foxglove Aphid
PestColonies of yellowish-green aphids on leaf undersides and flower stalks. Leaves become distorted and sticky with honeydew. Sooty mold may develop on honeydew deposits.
Leaf Spot
DiseaseCircular brown or purplish spots on leaves, sometimes with a lighter center. Spots may merge and cause premature leaf drop in severe cases, weakening the plant before flowering.
Crown Rot
DiseaseYellowing and wilting of the entire rosette despite adequate moisture. The crown turns mushy and brown at soil level, and the plant pulls away easily from the ground.
Troubleshooting Common Problems
The biennial nature confuses many gardeners who expect flowers in the first year from common varieties. Poor drainage leading to crown rot is the primary killer, especially during wet winters. Foxglove anthracnose can cause stem cankers in humid conditions. Self-sown seedlings may revert to the common purple form rather than maintaining named cultivar colors. Windswept locations cause flower spikes to lean dramatically, so staking or sheltered planting is advisable.
Growing Tips
- Always wear gloves when handling foxglove at any stage of growth, from transplanting seedlings to deadheading flowers to pulling spent plants. All parts are toxic, and the cardiac glycosides can be absorbed through cuts or abrasions on the skin.
- Foxglove thrives in partial shade to full shade with dappled light, making it ideal for woodland garden edges, north-facing borders, and the shaded side of walls or fences. It tolerates full sun in cooler climates but struggles in hot, sunny positions.
- Plant foxglove in moist, humus-rich, slightly acidic to neutral soil with a pH between 5.5 and 6.5. It will not perform well in heavy waterlogged clay or dry chalky alkaline soils. Amend planting areas with leaf mold or garden compost before planting.
- Because foxglove is biennial, sow seed two years in succession to ensure flowers every year. After the first couple of years, the colony will typically self-seed and maintain a continuous supply of rosettes and flowering plants on its own schedule.
- Space plants 30 to 45 centimeters apart to allow adequate air circulation, which reduces the risk of powdery mildew and crown rot. Overcrowded foxgloves produce thinner, weaker flower spikes with fewer blooms.
- Water foxglove consistently during dry periods, aiming for evenly moist but never waterlogged soil. The large, soft leaves lose moisture rapidly in warm weather, and drought stress causes premature bolting with shorter, less impressive flower spikes.
- Stake tall varieties, particularly the Excelsior and Giant Shirley hybrids, in exposed or windy garden sites. Insert bamboo canes or hazel sticks beside each plant in early spring before the flower spike develops to avoid damaging the root system later.
- Never plant foxglove near vegetable gardens, herb beds, or areas where children and pets play unsupervised. The risk of accidental ingestion is serious, and even a few chewed leaves can cause life-threatening cardiac arrhythmias in a small child or a household pet.
- Remove spent flower spikes promptly if you want to prevent self-seeding in unwanted areas. Foxglove is a prolific self-sower and can become a nuisance in tidy formal gardens or spread into adjacent wild areas where it may displace native vegetation.
- Combine foxglove with shade-loving companions such as hostas, ferns, astilbe, heuchera, and brunnera for a naturalistic woodland planting scheme. The tall vertical spikes of foxglove contrast beautifully with the low mounding and feathery textures of these partner plants.
Pick your Foxglove
Camelot Series
Compact first-year flowering plants reaching three to four feet with large flowers in cream, lavender, rose, and white, blooming reliably from seed in one season.
Excelsior Hybrids
Classic tall foxgloves to five feet with flowers held horizontally around the stem rather than drooping, giving better visibility of the spotted interiors.
Pam's Choice
Striking white bells with dramatic maroon-spotted throats on four-foot stems, a standout cottage garden selection that self-sows reasonably true.
Dalmatian Series
Dwarf first-year blooming foxgloves reaching only two to three feet, ideal for containers and small gardens, available in purple, peach, rose, and white.
Foxglove is an ornamental biennial, not a food crop, so cost savings come from its garden value rather than grocery replacement. A single packet of foxglove seeds (approximately 1,000 to 5,000 seeds, costing 2 to 4 dollars) can establish a self-sustaining colony that provides dramatic vertical interest in shaded borders for years with no ongoing seed purchases. Compared to buying mature nursery foxglove plants at 6 to 12 dollars each, growing from seed saves 90 percent or more. A well-managed colony eliminates the need for other expensive tall shade-tolerant perennials, saving 50 to 100 dollars annually in replacement bedding plants. Foxglove also attracts bumblebee pollinators that improve yields on nearby fruit and vegetable crops, providing indirect economic benefit to your kitchen garden.
Quick recipes
Pressed Foxglove Flower Art
15 minutes active, 2 weeks dryingPreserve the stunning beauty of foxglove blooms by pressing individual flowers between sheets of parchment paper in a heavy book or flower press. The pressed flowers retain their spotted interior markings and make beautiful additions to framed botanical art, handmade greeting cards, or nature journals. Always wear gloves when handling foxglove flowers, as all parts of the plant contain toxic cardiac glycosides. Wash hands thoroughly after the project.
5 ingredientsFoxglove-Inspired Natural Dye Bath
2 hoursWhile foxglove flowers and leaves should never be eaten or used in any food preparation, the spent flowers can be used to create a gentle botanical dye for fabric or yarn in soft mauve and green tones. Simmer collected spent blooms (never fresh leaves) in water with a mordant such as alum to extract color. This project should be done outdoors or in a well-ventilated area with dedicated non-food equipment. Wear gloves throughout and dispose of the dye bath responsibly. Label all dye materials clearly as toxic.
5 ingredientsFoxglove Seed Saving and Exchange Packets
30 minutesHarvest and package foxglove seeds for sharing with fellow gardeners or storing for future planting. Wait until the seed capsules on the lower portion of the spike have turned brown and begun to crack open. Cut the spike, invert it into a large paper bag, and shake vigorously to release the tiny seeds. Clean the seeds by sifting through a fine mesh strainer and package them in small labeled envelopes. Always include a clear warning on each packet that foxglove is toxic and should not be planted where children or pets have unsupervised access.
5 ingredientsWhat's inside
Health Benefits
- CRITICAL SAFETY WARNING: Foxglove is extremely poisonous and must never be consumed, brewed as tea, or used in any home remedy. All parts of the plant contain lethal cardiac glycosides. The following points describe historical pharmaceutical uses only, not recommendations for self-treatment.
- Pharmaceutical-grade digoxin derived from Digitalis species remains one of the most important cardiac medications in modern medicine, used under strict medical supervision to treat congestive heart failure by strengthening the force of heart muscle contractions.
- Digoxin is also prescribed to manage atrial fibrillation and atrial flutter, helping to control and slow a dangerously rapid heart rate by modulating electrical conduction through the atrioventricular node.
- Research into foxglove-derived compounds continues in oncology, where certain cardiac glycosides have shown preliminary activity against specific cancer cell lines in laboratory studies, though clinical applications remain experimental and unproven.
- The historical study of foxglove by William Withering in the 18th century established foundational principles of pharmacology including dose-response relationships, therapeutic windows, and the importance of standardized preparations, which continue to underpin modern drug development.
- Growing foxglove in the garden provides significant ecological benefits as the tubular flowers are an important nectar source for bumblebees and other long-tongued pollinators, supporting biodiversity in temperate garden ecosystems.
Where Foxglove comes from
Foxglove (Digitalis purpurea) is native to western and southwestern Europe, where it grows wild in woodland clearings, hedgerows, rocky hillsides, and disturbed ground from sea level to mountain elevations. Its natural range extends from the British Isles and Scandinavia southward through France, Spain, and Portugal. The plant has been recognized for centuries in European folk medicine, particularly for treating conditions now understood to be related to heart failure. The pivotal moment in foxglove's medical history came in 1775 when English physician William Withering learned from a Shropshire herbalist named Mother Hutton about a traditional remedy containing foxglove for treating dropsy, the painful fluid retention caused by congestive heart failure. Withering conducted a decade of careful clinical observations, systematically testing different preparations and dosages on his patients, and published his landmark work 'An Account of the Foxglove and Some of its Medical Uses' in 1785. This text is regarded as one of the earliest examples of rigorous clinical pharmacology. The active compounds, cardiac glycosides including digitoxin and digoxin, were later isolated and became cornerstone medications in cardiology, used to regulate heart rhythm and treat heart failure. Foxglove was introduced to North American gardens by colonial settlers and has since naturalized widely across the Pacific Northwest, New England, and parts of South America and Australasia. In some regions, particularly the temperate rainforests of the Pacific Northwest, it is now considered an invasive species that can displace native understory flora. Despite its toxicity, foxglove remains one of the most beloved cottage garden plants, prized for its towering spires of tubular flowers that attract bumblebees and add vertical drama to shaded borders.
Foxglove: did you know?
Fascinating facts about Foxglove
Foxglove is the original source of the heart drug digitalis, first described by English physician William Withering in 1785, who learned about the plant's medicinal use from a local folk healer in Shropshire. Digitoxin and digoxin derived from foxglove remain critical cardiac medications used to treat heart failure and atrial fibrillation to this day.
Foxglove questions, answered
When should I plant Foxglove?
What are good companion plants for Foxglove?
What hardiness zones can Foxglove grow in?
How much sun does Foxglove need?
How far apart should I space Foxglove?
What pests and diseases affect Foxglove?
How do I store Foxglove after harvest?
What are the best Foxglove varieties to grow?
What soil does Foxglove need?
Is foxglove safe to grow in a garden with children or pets?
Why did my foxglove not flower in its first year?
Can I use foxglove leaves to make a home remedy for heart problems?
How do I encourage my foxglove to self-seed and come back every year?
What should I do if someone accidentally eats foxglove?
Are there any non-toxic alternatives that look similar to foxglove?
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From the “When to plant” sectionDrag-and-drop bed planner
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From the “Growing guide” sectionCompanion conflicts, caught early
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From the “Companions” sectionReminders you'll actually act on
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From the “Harvest” sectionSuccession, scheduled
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From the “When to plant” sectionA record that gets smarter
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From the “Overview” sectionPlant these alongside Foxglove
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