How to Grow Hollyhocks from Seed – Happy Lights, Chater’s Salmon Pink & Chater Double Mix

Few flowers say “cottage garden” like hollyhocks (Alcea). Tall spires, nectar-rich blooms, and vintage charm make them irresistible—and they’re easy to start from seed. Use this guide to sow and grow Happy Lights Mix, Chater’s Salmon Pink, and Chater Double Mix for a summer display that turns heads and feeds pollinators.

Shop the varieties:
• Buy Happy Lights Mix Hollyhock Seeds → https://www.trailingpetunia.com/products/50-seeds-happy-lights-mix-hollyhock-holly-hock-seeds-tall-hollyhock?_pos=11&_sid=602acb3df&_ss=r
• Shop Chater’s Salmon Pink Hollyhock Seeds → https://www.trailingpetunia.com/products/hollyhock-seeds-chaters-salmon-pink-holly-hock-seeds-50-seeds-perennial?_pos=10&_sid=602acb3df&_ss=r
• Order Chater Double Mix Hollyhock Seeds → https://www.trailingpetunia.com/products/alcea-seeds-hollyhock-seeds-25-thru-250-chater-double-mix-seeds?_pos=9&_sid=602acb3df&_ss=r
• Bulk Hollyhock Seed Packs (all varieties) → https://www.trailingpetuniabulkseeds.com/

Step-by-Step: From Seed to Spires

1) Timing
Start seeds indoors 8–10 weeks before your last spring frost for the best chance at first-season blooms. You can also direct-sow outdoors after frost or in late summer/early fall for flowers next year.

2) Containers & mix
Use cell trays or 3–4″ pots filled with a fine, well-draining seed-starting mix. Pre-moisten until evenly damp (not soggy).

3) Sow shallow
Hollyhock seeds prefer a light cover. Place 1 seed per cell and cover ⅛″ (3 mm) with mix or vermiculite. Gently firm.

4) Warmth & moisture
Maintain 65–70°F (18–21°C). Keep consistently moist with a mister or bottom watering. Expect germination in 10–14 days.

5) Strong light
As soon as seedlings emerge, provide 14–16 hours of bright light daily (sunny window or grow lights 2–3″ above foliage). Rotate trays for even growth.

6) Thin & feed
At 2–3 true leaves, thin to one seedling per cell. Feed every 10–14 days with a half-strength, balanced liquid fertilizer.

7) Harden off
About 7–10 days before planting out, acclimate seedlings outdoors—start with a few hours of bright shade and gradually increase sun and wind exposure.

8) Transplanting
Choose full sun (6–8+ hrs) and well-drained soil amended with compost; target pH 6.0–7.5. Space plants 18–24″ apart; rows 24–36″. Set the crown at soil level, water deeply, and mulch to retain moisture.

9) Watering
Keep soil evenly moist while plants establish, then water deeply at the base during dry spells. Avoid overhead watering to keep leaves dry.

10) Support
Tall stalks can catch wind. Stake with bamboo canes or grow against a fence; use soft ties to prevent damage.

11) Rust management
Hollyhock rust shows as orange-brown leaf spots. Improve airflow, water at soil level, promptly remove spotted lower leaves, and keep beds mulched to reduce splash.

12) Feeding for flowers
Top-dress with compost in late spring. If desired, switch to a low-nitrogen bloom booster as buds form to encourage taller, fuller spikes.

13) Deadhead or save seed
Cut spent spikes to push side shoots and a longer bloom window. Leave a few stalks to dry if you want to collect seed or let plants self-sow.

14) Biennial/perennial habit
Many hollyhocks bloom in year two, but early indoor sowing often gives first-year flowers for Happy Lights Mix and some Chater types. In cold regions, protect crowns with a light winter mulch.

Variety Highlights

• Happy Lights Mix – Classic single blooms in a rainbow; fantastic for pollinators.

• Chater’s Salmon Pink – Lush, double, peony-like flowers in soft salmon for romantic borders.

• Chater Double Mix – A full palette of doubles (reds, pinks, lemons, creams) for dramatic backdrops.