Blue Pimpernel Seeds – Annual Ground Cover Flowers

Add a low-growing carpet of blue flowers to sunny borders and containers with Blue Pimpernel. Listed as Anagallis arvensis caerulea, this spreading annual grows approximately 6 inches tall and 12 inches wide. Its flowers open in sunshine and close in dull weather, a habit behind the traditional name “Poor Man’s Weather-Glass.”

Available Pack Sizes

Choose 25, 100, 300, or 1,000 seeds. All options are sold by seed count. This listing is for seeds, not live plants. Blue is the listed flower color; there is no separate color selection.

Plant Highlights

• Life cycle: Annual.
• Flowers: Blue blooms during summer under suitable conditions.
• Habit: Fast-growing and spreading.
• Approximate size: 6 inches tall by 12 inches wide.
• Light: Full sun.
• Soil: Moist, well-drained soil; listed pH range 5.5–7.5.
• Uses: Border edging, ground cover, pots, and hanging baskets.

Starting Seeds

Sow in small pots or seed trays using a fine seed-starting mix. Gently press seeds onto the surface. Seeds need light to germinate, so leave exposed or cover only very lightly, no deeper than approximately ⅛ inch.

Maintain temperatures around 55–70°F and keep the surface evenly moist without waterlogging. Germination is listed at approximately 30–42 days; timing varies with conditions, so avoid letting the seedbed dry out while waiting.

Direct Sowing and Spacing

Direct sow after frost danger has passed. Sow groups of 3–4 seeds approximately 12 inches apart, then thin to the strongest seedling in each group. Gradually acclimate indoor-raised seedlings before planting outside.

Garden Care

Choose a sunny position and keep the soil moist but freely draining. Water gently around young plants and avoid standing water. Allow space for spreading growth along paths or border edges. Flower opening and the length of the flowering season depend on sunshine, weather, and growing conditions.

Growing in Containers and Hanging Baskets

Use a container with drainage holes and a well-draining potting mix. Allow room for the plant’s approximately 12-inch spread rather than crowding seedlings. Position in full sun and check moisture frequently, particularly in hanging baskets or during hot, windy weather.

Water when the mix begins to dry, allowing excess water to drain. Do not leave pots standing in water-filled saucers. If combining with other plants, select companions with similar light and moisture needs. Trim spreading stems lightly as needed to keep the display tidy.

Plant Safety

Ornamental only. Do not eat. Pimpernel can be toxic if consumed. Keep seeds and plants away from children, pets, and livestock, and do not plant where grazing animals can reach them.