Few flowers say “cottage garden” quite like foxgloves (Digitalis), whose towering spires of tubular, freckled bells rise above the border in early summer and pull in bees and hummingbirds from across the yard. Most are biennials that spend their first year as a humble rosette of leaves before exploding into bloom the second year, then politely self-sow to keep the show going. They are easy and rewarding to grow from seed, but every part of the plant is highly toxic if eaten, so they deserve a thoughtful spot in the garden.
In this guide
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Foxglove quick facts
- Mostly biennial: foliage year 1, flowers year 2
- Part shade to sun; moist, well-drained soil
- Surface-sow seed (needs light); self-seeds freely
- Bee & hummingbird magnet
- WARNING: all parts are highly toxic if eaten
Meet the foxglove: biennial vs. perennial types
The classic foxglove, Digitalis purpurea, is a short-lived biennial. That means an individual plant lives roughly two years: it grows a leafy rosette the first season, overwinters, then sends up its flower spire the second summer before setting seed and dying. Because foxgloves self-seed so generously, a single planting can feel “perennial” as new seedlings fill the gaps each year, even though no one plant lives long.
Not all foxgloves follow this rule. A handful of species and hybrids behave as true short-lived perennials, coming back from the same crown for several years.
Common types to know
- Common foxglove (Digitalis purpurea) — the tall, freckled cottage-garden classic; biennial. Series like ‘Foxy’ and ‘Camelot’ can flower the first year from an early sowing.
- Strawberry foxglove (Digitalis x mertonensis) — coppery-rose blooms; a reliable short-lived perennial.
- Yellow foxglove (Digitalis grandiflora / lutea) — soft yellow bells; perennial and tidy.
- Rusty foxglove (Digitalis ferruginea) — narrow, honey-brown spires; perennial and architectural.
Foxgloves are hardy across roughly USDA zones 4–9 depending on the species. For more cottage-garden spire companions, see our guide to how to grow hollyhocks.
Sowing foxglove seed (light is the secret)
Foxglove seed is dust-fine and needs light to germinate, so the golden rule is: do not bury it. Surface-sow and press the seed gently onto moist soil rather than covering it. This single detail is the most common reason foxglove sowings fail.
Step by step
- Timing: Sow late spring through midsummer for flowers the following year, or start indoors 8–10 weeks before your last frost for a chance at first-year bloom from “annual” series.
- Containers: Fill clean seed starting trays with a fine, moist seed-starting mix.
- Sow: Scatter foxglove seeds thinly across the surface and press lightly. Do not cover.
- Moisten: Mist or bottom-water to avoid washing seed away. Keep evenly damp.
- Light & warmth: Place in bright light at around 65–70°F (18–21°C). Seedlings appear in 2–3 weeks.
- Pot on: When seedlings have a few true leaves, prick them out into cells or small pots.
- Transplant: Move young plants to the garden 12–18 inches apart once established.
You can also direct-sow outdoors by scattering seed on raked, weed-free soil and watering gently. Just remember the same rule: leave it on the surface where light can reach it. Mark the spot so you do not weed out the fine seedlings by mistake, and keep the area from drying out while germination is underway. Direct-sown foxgloves often establish deep, sturdy roots and can outperform transplants over the long run, though you trade away the head start that indoor sowing provides.
Where to plant: light, soil, and spacing
Foxgloves are wonderfully adaptable. In cooler climates they happily take full sun, while in hot-summer regions they prefer part shade or dappled light to keep their roots cool and blooms fresh. Their tolerance of shade makes them a star of the woodland edge — see more companions in our shade garden ideas.
Ideal growing conditions
- Light: Part shade to full sun; afternoon shade in hot regions.
- Soil: Moist but well-drained, rich in organic matter. Soggy winter soil rots the crowns.
- pH: Slightly acidic to neutral, though they are not fussy.
- Spacing: 12–18 inches apart so air circulates and spires have room.
- Moisture: Consistent water, especially in the first year as rosettes establish.
Work a few inches of compost into the bed before planting and mulch lightly to hold moisture. Avoid hot, dry, baking spots — that is the one situation foxgloves dislike. Foxgloves are also heavy feeders for their size; a single dose of balanced organic fertilizer in spring as the spires begin to extend supports bigger, longer-lasting flower displays. There is no need to overfeed, as too much nitrogen produces lush leaves at the expense of bloom and weaker, floppier stems that are harder to keep upright.
The biennial cycle and self-seeding
Understanding the two-year rhythm is the key to never being without foxgloves. In year one, the plant builds a low rosette of soft, fuzzy leaves and stores energy. Over winter it sits tight. In year two, it bolts upward into the tall flowering spire you planted them for, sets thousands of seeds, and then typically dies.
Keeping a continuous display
- Sow two years running: Plant seed in two consecutive seasons so you always have both first-year rosettes and second-year bloomers in the bed.
- Let some self-seed: Allow a few spires to ripen and drop seed. Volunteer seedlings will appear nearby and continue the cycle for free.
- Thin the volunteers: Self-sown seedlings can be thick. Thin or transplant them to the spacing you want.
- Note on hybrids: Named hybrids may not come true from self-sown seed, often reverting to purple. That is part of the charm for many gardeners.
Deadheading, staking, and ongoing care
Foxgloves are low-maintenance, but a couple of well-timed tasks keep them looking their best and influence whether they self-seed.
Deadhead vs. leave for seed
- To encourage a second flush: Cut the main spike once most flowers fade, and side shoots may produce smaller secondary spires.
- To collect or scatter seed: Leave the best spires standing until the pods dry and split, then shake seed where you want new plants.
- To prevent spread: If you do not want volunteers, deadhead promptly before seed ripens.
Staking the tall spires
Spires can reach 3–6 feet and become top-heavy in wind or rain. In exposed sites, support them with discreet plant stakes and soft ties, placing the stake early so it disappears among the leaves. Tie loosely below the flower head and again midway down the stem.
Pests and problems
- Powdery mildew & leaf spot: Improve airflow and avoid overhead watering in humid weather.
- Crown rot: Caused by waterlogged winter soil — drainage is the fix.
- Aphids & slugs: Watch young rosettes; usually minor.
- Deer resistance: Their toxicity means deer and rabbits generally leave them alone.
Attracting bees and hummingbirds
Those tubular bells are practically designed for pollinators. Long-tongued bumblebees disappear right inside the freckled throats to reach the nectar, and the freckles themselves act as nectar guides. In the Americas, the tubular shape and warm colors also draw hummingbirds, making foxgloves a true wildlife magnet.
- Plant in generous drifts rather than singles for maximum visibility to pollinators.
- Combine with other vertical and tubular bloomers for a long nectar season.
- Skip pesticides on or near flowering spires to protect visiting bees.
For a whole bed built around wildlife, browse our roundup of the best plants for pollinators.
Important: foxgloves are highly toxic
This is the one warning every foxglove grower must take seriously. All parts of the plant — leaves, flowers, seeds, and roots — are highly toxic if eaten. Foxgloves contain cardiac glycosides (the source of the heart drug digitalis), which can cause dangerous heart-rhythm disturbances, nausea, and vomiting. They are toxic to people, dogs, cats, and livestock alike.
- Never eat any part and never confuse the leaves with edible greens like comfrey — poisonings have happened this way.
- Keep away from children and pets; site plants where curious mouths cannot reach them.
- Wear gloves when handling and wash hands afterward, especially if you have sensitive skin.
- If ingested, contact poison control or a doctor/veterinarian immediately.
Grown with this respect, foxgloves are perfectly safe to enjoy in the garden — their toxicity is only a hazard if they are eaten. For the full library of growing guides, visit our plant & flower care guide.
Frequently asked questions
Do foxgloves come back every year?
Most common foxgloves are biennials, so an individual plant lives about two years — leaves the first year, flowers the second — then dies. However, they self-seed so freely that the patch returns year after year. Some species, like Digitalis grandiflora and Digitalis x mertonensis, are true short-lived perennials.
Why won’t my foxglove seeds germinate?
The most common cause is burying the seed. Foxglove seed needs light to sprout, so surface-sow it, press it lightly onto moist soil, and never cover it. Keep it evenly moist at around 65–70°F and seedlings should appear in 2–3 weeks.
How do I get foxgloves to flower the first year?
Choose first-year-flowering series such as ‘Foxy’ or ‘Camelot’ and start them indoors 8–10 weeks before your last frost. Most standard foxgloves, however, will only bloom in their second year.
Should I deadhead foxgloves?
It depends on your goal. Deadhead the main spike to encourage smaller side spires and a tidier look, or leave spires standing to ripen seed for self-sowing and collecting. To stop them spreading, remove flower stalks before the seed pods dry.
Are foxgloves poisonous to pets and children?
Yes — all parts are highly toxic if eaten, including to dogs, cats, and livestock. They contain cardiac glycosides that affect the heart. Plant them out of reach, wear gloves when handling, and seek medical or veterinary help immediately if any part is ingested.