Larkspur Giant Imperial Mix
Larkspur 'Giant Imperial Mix' Seeds
If you love the towering vertical spikes of a cottage border but don't want to wait years for perennials to establish, Larkspur is the answer. 'Giant Imperial' is a superior, florist-quality strain that produces tall, sturdy stems packed with fully double, ruffled flowers in a romantic mix of violet, deep blue, rose pink, carmine, and white.
Unlike older varieties that produce just one central stem, the 'Imperial' group branches from the base, giving you multiple cutting stems from every single plant. It is an absolute essential for the cutting patch, providing height and drama to bouquets. It also dries beautifully, holding its colour for winter arrangements or making the perfect biodegradable wedding confetti.
Read More
🌿 Understanding the Plant
Consolida ajacis, or Larkspur, is the annual relative of the Delphinium and is a robust Hardy Annual (H3). It is a "cool-season" specialist, genetically programmed to establish its roots during the damp, chilly UK autumn or early spring before the intense heat of summer arrives.
The Branching Advantage: 'Giant Imperial' is prized by flower farmers because of its basal-branching habit. Instead of one single spike, each plant produces several stems, significantly increasing your harvest for the vase. These stems are strong and rigid, though they still appreciate some protection from strong winds.
RHS Wildlife Hero: Listed on the RHS Plants for Pollinators list, Larkspur is a magnet for bumblebees and hoverflies. The complex, spurred flowers provide a deep well of nectar that is highly valued by beneficial insects in the mid-summer garden.
🌱 Growing Guide: The Fridge Trick
Larkspur seeds can sometimes enter a state of deep dormancy if they get too warm. To guarantee success, place your sealed seed packet in the freezer for 7 days before sowing. This "cold shock" mimics a sharp frost and tells the seed that winter is over and it is time to grow.
How to Sow:
Sow directly outdoors in September (for the tallest, earliest flowers) or March/April. Scatter seeds onto finely raked soil and cover lightly; Larkspur seeds require darkness to germinate. They have a sensitive taproot and hate being moved, so direct sowing is strongly recommended for the best results.
Where to Plant:
They demand full sun and fertile, well-drained soil. As they are fast-growing and reach up to 1.2 metres, they are "hungry" plants; digging in some well-rotted garden compost before sowing will result in much thicker, more floriferous spires.
Ongoing Care:
In windy or exposed UK gardens, provide support with birch twigs or garden twine while the plants are still young. To maximize your cutting season, harvest the main central stem first to encourage the side branches to develop their own flower spikes.
📋 Plant Specifications
| Botanical Name | Consolida ajacis |
| Common Name | Larkspur 'Giant Imperial Mix' |
| Plant Type | Hardy Annual |
| Hardiness | H3 (Tolerates light frost) |
| Light Requirements | Full Sun ☀️ |
| Height | 90cm - 120cm |
| Spread | 40cm |
| Spacing | Plant 30cm apart |
| Flowering Period | June to August |
| Perfect For | ✂️ Professional Cut Flowers 🍂 Winter Dried Arrangements 👰 Biodegradable Confetti 🐝 Wildlife Support |
| Seeds per Packet | Approximately 300 seeds |
🤝 Beautiful Garden Combinations
The tall spires of Larkspur provide much-needed vertical structure. Pair them with these available softer shapes from our collection:
- 🔵 Cornflower 'Blue Ball': The Country Classic. Cornflowers and Larkspur are the traditional duo for a romantic English meadow border. The round heads of the cornflower contrast perfectly with the vertical Larkspur spikes.
- ❄️ Ammi Majus (Queen Anne’s Lace) : The Filler. While Larkspur provides the structural "thriller" spires, Ammi Majus provides the frothy white "filler" that knits the whole planting scheme together.
📅 Sowing & Flowering Calendar
Sow in autumn for spectacular early summer spires, or early spring for a mid-summer display.
⚠️ Toxicity Warning
Larkspur belongs to the Delphinium family; all parts of the plant and its seeds are toxic if ingested by humans or pets. We recommend washing your hands after handling the seeds.
🏆 RHS Plants for Pollinators
Larkspur is an exceptional nectar source for UK pollinators. Consolida ajacis is listed on the RHS Plants for Pollinators list, and is particularly loved by bumblebees and hoverflies in the high-summer garden.
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Description
Larkspur 'Giant Imperial Mix' Seeds
If you love the towering vertical spikes of a cottage border but don't want to wait years for perennials to establish, Larkspur is the answer. 'Giant Imperial' is a superior, florist-quality strain that produces tall, sturdy stems packed with fully double, ruffled flowers in a romantic mix of violet, deep blue, rose pink, carmine, and white.
Unlike older varieties that produce just one central stem, the 'Imperial' group branches from the base, giving you multiple cutting stems from every single plant. It is an absolute essential for the cutting patch, providing height and drama to bouquets. It also dries beautifully, holding its colour for winter arrangements or making the perfect biodegradable wedding confetti.
Read More
🌿 Understanding the Plant
Consolida ajacis, or Larkspur, is the annual relative of the Delphinium and is a robust Hardy Annual (H3). It is a "cool-season" specialist, genetically programmed to establish its roots during the damp, chilly UK autumn or early spring before the intense heat of summer arrives.
The Branching Advantage: 'Giant Imperial' is prized by flower farmers because of its basal-branching habit. Instead of one single spike, each plant produces several stems, significantly increasing your harvest for the vase. These stems are strong and rigid, though they still appreciate some protection from strong winds.
RHS Wildlife Hero: Listed on the RHS Plants for Pollinators list, Larkspur is a magnet for bumblebees and hoverflies. The complex, spurred flowers provide a deep well of nectar that is highly valued by beneficial insects in the mid-summer garden.
🌱 Growing Guide: The Fridge Trick
Larkspur seeds can sometimes enter a state of deep dormancy if they get too warm. To guarantee success, place your sealed seed packet in the freezer for 7 days before sowing. This "cold shock" mimics a sharp frost and tells the seed that winter is over and it is time to grow.
How to Sow:
Sow directly outdoors in September (for the tallest, earliest flowers) or March/April. Scatter seeds onto finely raked soil and cover lightly; Larkspur seeds require darkness to germinate. They have a sensitive taproot and hate being moved, so direct sowing is strongly recommended for the best results.
Where to Plant:
They demand full sun and fertile, well-drained soil. As they are fast-growing and reach up to 1.2 metres, they are "hungry" plants; digging in some well-rotted garden compost before sowing will result in much thicker, more floriferous spires.
Ongoing Care:
In windy or exposed UK gardens, provide support with birch twigs or garden twine while the plants are still young. To maximize your cutting season, harvest the main central stem first to encourage the side branches to develop their own flower spikes.
📋 Plant Specifications
| Botanical Name | Consolida ajacis |
| Common Name | Larkspur 'Giant Imperial Mix' |
| Plant Type | Hardy Annual |
| Hardiness | H3 (Tolerates light frost) |
| Light Requirements | Full Sun ☀️ |
| Height | 90cm - 120cm |
| Spread | 40cm |
| Spacing | Plant 30cm apart |
| Flowering Period | June to August |
| Perfect For | ✂️ Professional Cut Flowers 🍂 Winter Dried Arrangements 👰 Biodegradable Confetti 🐝 Wildlife Support |
| Seeds per Packet | Approximately 300 seeds |
🤝 Beautiful Garden Combinations
The tall spires of Larkspur provide much-needed vertical structure. Pair them with these available softer shapes from our collection:
- 🔵 Cornflower 'Blue Ball': The Country Classic. Cornflowers and Larkspur are the traditional duo for a romantic English meadow border. The round heads of the cornflower contrast perfectly with the vertical Larkspur spikes.
- ❄️ Ammi Majus (Queen Anne’s Lace) : The Filler. While Larkspur provides the structural "thriller" spires, Ammi Majus provides the frothy white "filler" that knits the whole planting scheme together.
📅 Sowing & Flowering Calendar
Sow in autumn for spectacular early summer spires, or early spring for a mid-summer display.
⚠️ Toxicity Warning
Larkspur belongs to the Delphinium family; all parts of the plant and its seeds are toxic if ingested by humans or pets. We recommend washing your hands after handling the seeds.
🏆 RHS Plants for Pollinators
Larkspur is an exceptional nectar source for UK pollinators. Consolida ajacis is listed on the RHS Plants for Pollinators list, and is particularly loved by bumblebees and hoverflies in the high-summer garden.
