Hollyhock Seeds – Double | Alcea rosea | WINTER

Hollyhock (Alcea rosea) is a tall ornamental flowering plant from the Malvaceae family.

It develops a basal cluster of broad foliage followed by impressive upright flowering stems carrying numerous large blooms.

Double varieties are particularly valued for:

Dense, multi-petalled flowers with a full, ruffled appearance.

Flowers may occur in a wide range of colours including:

Pink, red, rose, white, yellow, maroon, peach and mixed shades.

Depending on variety and growing conditions, Hollyhock plants may reach approximately:

1.5–2.1 metres / 5–7 feet tall.

Key Features

• Botanical name: Alcea rosea
• Common name: Hollyhock
• Double-flowered variety
• Large multi-petalled blooms
• Tall upright flower spikes
• Mixed flower colours
• Excellent vertical garden plant
• Suitable for walls and fences
• Suitable for background planting
• Ideal for cottage-style gardens
• Suitable for large pots and grow bags
• Full-sun plant
• Winter sowing for Pakistan

Recommended Grow Bags

G-12 Grow Bag – 12 × 12 inch 🔗

Suitable for:

One young Hollyhock plant, especially during early development.

For long-term container growing, larger root space is preferable because Hollyhocks develop:

Strong upright growth and a substantial root system.

G-24 Grow Bag – 24 × 12 inch 🔗

Suitable for:

A broader planting where adequate spacing between plants can be maintained.

For the strongest growth and tallest flowering spikes:

Growing directly in the ground or in a large, deep container is preferred.

Recommended Soil / Potting Mix

Use:

60% Bhalu Mitti / Sandy Soil + 30% GREEN GARDENS Vermicompost 🔗 + 10% Cocopeat

The growing medium should be:

Deep, fertile, loose and well-draining.

Hollyhocks develop a substantial root system, so avoid:

• Shallow compact soil
• Heavy waterlogged soil
• Poor drainage
• Continuously saturated growing media

Moderately fertile, well-drained soil in full sun is particularly suitable for Hollyhocks.

Growing Instructions from Seeds

Hollyhock seeds can be:

Direct sown or started in seedling trays / nursery pots.

Sow seeds approximately:

0.5–1 cm deep.

Cover lightly with fine growing medium and water gently.

Keep the growing medium:

Lightly and consistently moist until germination.

Seeds generally germinate readily under suitable cool-to-moderate temperatures.

Important Sowing Note

Avoid sowing Hollyhock seeds too deeply.

A:

Light covering of fine soil

is sufficient.

Because Hollyhocks develop a strong root system:

Transplant seedlings while they are still young.

Avoid repeatedly disturbing established roots.

If several seedlings emerge together:

Thin the weaker seedlings and retain the strongest plants.

Germination

Seeds generally germinate within:

7–14 days

under suitable conditions.

Good germination depends on:

• Suitable temperature
• Consistent moisture
• Correct sowing depth
• Well-draining growing medium
• Seed freshness

Avoid:

Allowing the growing medium to dry completely or remain permanently waterlogged.

Ideal Germination Temperature

Recommended germination temperature:

16–21°C

This temperature range encourages:

Healthy and reliable germination.

After germination, plants perform particularly well under:

Cool to mild growing conditions with good sunlight.

Plant Spacing

Maintain approximately:

30–45 cm / 12–18 inches between plants

for home garden cultivation.

For vigorous varieties or where maximum air circulation is desired:

Additional spacing may be beneficial.

Adequate spacing helps provide:

Better airflow, stronger stems and healthier foliage.

Sunlight

Provide:

Full sun.

A minimum of approximately:

5–6+ hours of direct sunlight daily

is recommended for strong growth and flowering.

Hollyhocks perform best in sunny positions and may require support if grown in exposed or windy locations.

Watering

Keep young plants moderately moist while they establish.

Afterward:

Water deeply when the upper soil layer begins to dry.

Avoid:

Standing water and continuously saturated soil.

Where possible, water near the soil surface rather than repeatedly wetting the foliage.

Good airflow and sensible watering are particularly useful because Hollyhocks can be susceptible to:

Hollyhock rust.

Feeding

At planting time, incorporate a moderate amount of:

GREEN GARDENS Vermicompost 🔗

into the growing medium.

Hollyhock prefers:

Moderately fertile soil with good organic matter.

Avoid excessive nitrogen fertilizer, which may encourage:

Excessive soft leafy growth instead of strong flowering stems.

Support for Tall Plants

Hollyhocks can become very tall.

Plants growing in:

Windy or exposed locations

may require staking or support.

Install support before flowering stems become excessively tall to avoid damaging the plant.

Growing against:

Walls, fences or sheltered boundaries

can also provide useful protection from strong winds.

Flowering

In Pakistan's hot plains, autumn and winter sowing allows the plant to establish during cooler weather, with flowering developing as plants mature.

Flowering performance depends on:

• Sowing time
• Variety
• Plant maturity
• Winter temperatures
• Sunlight
• Root space
• Soil fertility
• Overall growing conditions

Hollyhocks are botanically often grown as:

Biennials or short-lived perennials, although flowering behaviour can vary according to cultivar, climate and growing method.

Related Products

G-12 Grow Bag – 12 × 12 inch 🔗

G-24 Grow Bag – 24 × 12 inch 🔗

GREEN GARDENS Vermicompost 🔗

Winter Flower Seeds 🔗

Growing Guide Videos – Gardening with Javed Iqbal 🔗