Everything you need to know about Salpiglossis Sinuata seeds

Growing Salpiglossis Sinuata (Painted Tongue) Seeds: Questions & Answers (Updated 23/01/2026)

What is Salpiglossis sinuata?
Salpiglossis sinuata, commonly called Painted Tongue, is an annual flowering plant known for its trumpet-shaped, velvety flowers in vibrant colors and intricate patterns. It is a popular choice for borders, containers, and cottage gardens. The plant attracts pollinators like bees and adds long-lasting summer and autumn blooms.

When should I sow Painted Tongue seeds?
Seeds are best sown indoors in late winter to early spring, about 8–10 weeks before the last frost. This gives seedlings time to establish before transplanting outdoors. In mild climates, you can also sow directly in the garden after the frost risk has passed.

Do Painted Tongue seeds need light to germinate?
Yes, the seeds are light-sensitive and should not be buried. Scatter them on the surface of a well-draining seed mix and lightly press them in. Keep the soil moist, and germination should occur in 10–14 days.

What temperature is ideal for germination?
Painted Tongue seeds germinate best at 15–20°C. Cooler temperatures may slow germination, while high heat can stress seedlings. A bright, warm windowsill or heated propagation tray works well.

How do I transplant seedlings outdoors?
Transplant seedlings once they have 4–6 true leaves and all risk of frost has passed. Harden them off gradually by exposing them to outdoor conditions for several hours a day over a week. Space plants about 25–30 cm apart in a sunny, sheltered location.

What type of soil does Painted Tongue prefer?
Salpiglossis thrives in fertile, well-drained soil. Light sandy or loamy soils enriched with organic matter work best. Avoid heavy clay or waterlogged soil, which can rot the roots.

How much sunlight does Painted Tongue need?
Full sun is ideal for strong growth and vibrant flowers. In very hot climates, light afternoon shade can prevent leaf scorch and prolong flowering. Partial shade is tolerated but may reduce flower production.

How often should I water Painted Tongue?
Keep the soil consistently moist during establishment, but avoid waterlogging. Mature plants are moderately drought-tolerant but perform best with regular watering. Mulching helps retain moisture and control weeds.

Do I need to fertilize Painted Tongue?
Occasional feeding with a balanced liquid fertilizer encourages prolonged flowering. Fertilize every 2–3 weeks during the active growing season. Avoid excessive nitrogen, which can promote leaf growth at the expense of flowers.

When does Painted Tongue flower?
Flowers typically appear from summer to autumn, depending on sowing time and climate. Deadheading spent blooms encourages continuous flowering. Flower colors range from reds and purples to yellows and oranges, often with intricate veining.

Can Painted Tongue be grown in containers?
Yes, it grows well in pots, window boxes, and large containers. Ensure good drainage and use a fertile potting mix. Containers allow easier control of watering and can be moved to protect from frost.

How tall does Salpiglossis grow?
Painted Tongue generally grows 50–80 cm tall, though some varieties reach up to 1 meter. Plants have upright stems with bushy foliage and multiple flowering branches. Taller varieties may need light staking.

Is Painted Tongue frost-tolerant?
It is sensitive to frost and should be protected from cold temperatures. Young seedlings should be started indoors or in a greenhouse if frost is likely. Mature plants can tolerate mild cool nights but not freezing temperatures.

Can Painted Tongue self-seed?
Yes, Salpiglossis can self-seed if flowers are left to set seed. Collect seeds if you want to control propagation or sow them in a new location. This makes it easy to grow the plant year after year in your garden.

What pests affect Painted Tongue?
Common pests include aphids, slugs, and caterpillars. Regular inspection and organic treatments like neem oil or hand-picking help protect plants. Healthy soil and good airflow reduce pest problems naturally.

How do I prevent diseases?
Overwatering or poor drainage can cause root rot or fungal issues. Plant in well-drained soil, avoid overhead watering, and provide adequate spacing for airflow. Remove diseased foliage promptly to prevent spread.

Can Painted Tongue be propagated besides seeds?
Propagation is almost always by seed, as cuttings rarely succeed. Seeds are easy to collect from mature pods and store for future planting. Starting from seed ensures healthy plants that maintain flower patterns.

How should I deadhead Painted Tongue?
Remove spent flowers regularly by cutting the stem just above a set of leaves. This prevents seed formation and encourages the plant to produce more blooms. Deadheading also keeps the plant tidy and prolongs flowering.

How do I support Painted Tongue in windy areas?
Tall or open-stemmed varieties may need staking or support to prevent flopping in strong winds. Use soft ties to avoid damaging stems. Alternatively, plant in sheltered locations to reduce wind stress.

What are the best companion plants for Painted Tongue?
It pairs well with other annuals and perennials with similar sun and water requirements, such as cosmos, nasturtiums, marigolds, and salvias. Companion planting can enhance color, attract pollinators, and create a lush garden display.