Veronica is a robust genus of flowering plants that includes more than 500 species, and one of the most popular members is the easy-growing perennial Veronica spicata, known as spiked speedwell or simply speedwell. Gardeners grow it for showy spikes of long-lasting flowers that open in late spring or early summer above dense mounds of narrow foliage. The plant keeps a low profile clump of leaves that stays tidy all season, which is why it appears in sunny borders, rock gardens, and civic plantings alike. Understanding how this perennial grows makes it easy to place it correctly and keep the spikes coming back year after year.
What Is Spiked Speedwell?
Veronica spicata is a clump-forming herbaceous perennial native to Europe and Asia. The flowers rise on sturdy stems from the foliage mound, forming tapered, spike-like racemes covered with tiny, star-shaped flowers in a striking violet-blue. Blooming begins in late spring or early summer and carries on for weeks, especially when spent spikes are trimmed. The genus includes low creepers, mid-height clumpers, and a few taller types, so there is a speedwell for nearly every sunny spot.
Breeders and public gardens have raised the profile of spiked speedwell over the past two decades, with award-winning cultivars such as Sunny Border Blue and Royal Candles bringing deeper blues, pinks, and whites to the market. The flowers also attract bees, butterflies, and other pollinators, which adds to the plant’s value in any planting scheme.
Spiked speedwell at a glance
| Feature | Detail |
|---|---|
| Botanical name | Veronica spicata |
| Common name | Spiked speedwell, spike speedwell |
| Plant type | Herbaceous perennial |
| Mature size | 1 to 2 feet tall, 1 to 1.5 feet wide depending on cultivar |
| Sun exposure | Full sun, at least 6 hours daily |
| Soil type | Average, well-drained |
| Soil pH | Neutral to slightly alkaline, 6.0 to 7.8 |
| Bloom time | Late spring to early summer, with repeat bloom if trimmed |
| Flower color | Violet-blue, plus pink, white, and purple cultivars |
| Hardiness zones | USDA 3 to 8 |
| Native area | Europe, Asia |
Hardiness is a big part of the appeal: most cultivars are reliably perennial in USDA zones 3 through 8 and handle cold winters without special treatment. In the warmest parts of zone 8, a little afternoon shade keeps the plants from baking, while cool-summer regions get the densest spikes of all.
How to Grow Spiked Speedwell
Spiked speedwell asks for three basics: full sun, sharp drainage, and room to breathe. Six or more hours of direct sun produces the densest spikes, while plants in part shade grow loose and flop over. Soil that drains quickly prevents the crown rot that kills more speedwell than any pest does, and the plant tolerates average fertility, so heavy feeding is unnecessary.
Planting steps
- Pick a full-sun location and dig a hole about twice the width of the root ball.
- Set the crown at soil level; planting too deep invites rot.
- Backfill with the excavated soil, firm it gently, and water deeply.
- Space plants 12 to 18 inches apart so air circulates around the clumps.
- Add a thin layer of mulch or fine gravel around, but not over, the crown.
Container growing works well too, provided the pot drains freely and the plant gets the same sun. Speedwell tolerates drought once established, but a weekly watering during the first season keeps the root system growing steadily.
Starting plants from seed
Seed-grown speedwell takes longer but costs less. Sow seed indoors 8 to 10 weeks before the last frost, pressing it onto moist potting mix without covering it, because light aids germination. Some species germinate better after a month of cold stratification. Harden off the seedlings over a week and transplant them after the last frost. Division of an established clump is the faster route: dig in spring or fall, split the crown into sections with several shoots each, and replant immediately.
Veronica Care Through the Season
Routine care is light. Water during dry spells, especially in the first year, and cut spent spikes back to a side bud to encourage a second flush of bloom. A light application of balanced fertilizer in early spring supports growth, but too much nitrogen makes the stems floppy. Tall cultivars may need staking in rich soil.
The tapered, spike-like racemes covered in tiny star-shaped flowers give each plant a distinctive profile in the border, so keep that shape in mind when pruning: trim only the faded stems, never the whole clump, and the mound stays intact through the season.
Deadheading and pruning
How to deadhead spiked speedwell
Use clean pruners and cut each faded spike just above the first set of leaves below the flower. Work through the clump every week or two during bloom, and the plant responds with a fresh round of spikes. At the end of the season, cut the whole plant back to a few inches in late fall, or leave the stems for winter interest and tidy them in early spring before new growth begins.
When to divide
Divide clumps every three to four years in early spring or fall. Rejuvenated divisions bloom better, and the extras fill other beds or become gifts. Water the divisions well until they re-establish, and expect a short pause in blooming the first season after a late split.
Landscape Uses and Companion Plants
Spiked speedwell earns high-profile positions in foundation plantings, entry gardens, and along walkways because the vertical spikes keep blooming for weeks and hold up well as cut flowers. In a mixed border, plant it toward the front or middle, where the upright flowers contrast with mounded and rounded neighbors. The spikes also last several days in a vase.
Pair speedwell with plants that share its sun and drainage needs but differ in form, so the border reads as layers rather than a single texture.
Companion plant pairings
- Catmint and salvia, which echo the blue tones and bloom at the same time
- Coreopsis and yarrow for yellow contrast against the violet spikes
- Daylilies and ornamental grasses for textural contrast and movement
- Lavender and Russian sage for a hot, dry planting scheme
- Low sedums and creeping thyme at the front edge of the bed
For a naturalized look, plant speedwell in drifts of five or more instead of single specimens. The repetition strengthens the vertical accent, and the mound foliage knits together into a weed-suppressing mat over time.
Common Pests and Mistakes to Avoid
Speedwell is largely pest-free, but a few problems show up. Aphids cluster on new growth in spring and can be washed off with a strong stream of water. Spider mites appear during hot, dry weather and are kept in check by rinsing dusty foliage. Powdery mildew develops in humid, shaded spots, which is one more reason full sun matters. Crown and root rot are the most serious failures and nearly always trace back to wet soil.
Mistakes that shorten a planting’s life
- Planting in shade, which produces weak, floppy growth and fewer spikes
- Letting the crown sit in waterlogged soil after heavy rain
- Covering the crown with mulch, which traps moisture against the stem
- Fertilizing heavily, which trades flowers for soft foliage
- Cutting the clump back at the wrong time and losing that season’s bloom
Sourcing matters as much as care. Buy from a nursery that labels cultivars correctly, because mislabeled plugs are common, and the plant trade has seen its own legal pitfalls when sellers pass off look-alike species under a famous name. A named cultivar from a reputable grower behaves predictably; a mystery plant often does not.
Quick Answers About Growing Speedwell
Common questions
Why is my speedwell not blooming?
The usual causes are too little sun, overfertilizing, or an overgrown clump that needs division. Give the plant six hours of direct light, cut back on feeding, and split crowded crowns in spring to restart the cycle.
Does speedwell rebloom after deadheading?
Yes. Trimming spent spikes before seeds form pushes many cultivars into a second flush, and the habit keeps the planting looking neat through the summer months.
Can spiked speedwell grow in containers?
Yes, with a pot at least 12 inches deep, free-draining mix, and full sun. Container plants dry out faster, so check them in hot weather, and move pots to a sheltered spot or an unheated garage for winter in cold zones.
How much space does a clump need?
Most cultivars stay 1 to 2 feet tall and spread about 18 inches, so three plants fill a 3-foot front-of-border slot. Measure the opening before you buy and match the plant’s profile to the site, the way construction crews rely on precise profile transfer when they copy an irregular shape onto a new material.