When to Plant Lemon Verbena in Haiku, Hawaii (96708)

Location

Haiku, Hawaii

ZIP Code

96708

USDA Zone

12a

Last Frost

Thursday, January 1, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Thursday, November 20, 2025

Transplant Outdoors

Thursday, January 15, 2026

Based on last frost Thursday, January 1, 2026 · Zone 12a

Pro tip: Start Lemon Verbena seeds indoors 6 weeks before your last frost date, then transplant outdoors around Thursday, January 15, 2026.

Add to Calendar (.ics)

🌿 Plant Details

Scientific Name Aloysia citrodora

Days to Maturity 120 days

Mature Height 24-72"

Spread 36"

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Moderate (1 inch/week)

↔️

Spacing

24" apart

🌱

Planting Depth

0.125" deep

Seeds typically germinate in 14-30 days

Ready to Plant Lemon Verbena in Haiku?

Get your seeds now so they're ready by Thursday, November 20, 2025.

🛒 Buy on Amazon 🌿 True Leaf Market

* Affiliate links — we may earn a small commission at no extra cost to you.

🤝 Good Companions

BasilTomatoPepper

🤝

Full Companion Planting Guide for Lemon Verbena

See which plants help Lemon Verbena thrive, which to keep away, and raised bed layout tips →

🛠️ Supplies You'll Need

🌱 Seed Starting Trays 🪴 Seed Starting Mix 💡 Grow Lights 🌡️ Heat Mat 🪵 Raised Garden Bed 🌍 Vegetable Garden Soil 🛠️ Hand Trowel Set 🚿 Watering Can

* Affiliate links — we may earn a small commission at no extra cost to you.

🌾 Seed Saving Guide

🔴 Difficult

✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Flowers set seed in late summer but viability is often low in temperate climates.

Processing

Harvest seed pods when dry, extract tiny seeds. Germination is slow and irregular.

Seed Viability

Up to 1 year when stored cool, dark, and dry.

Pro Tip

Semi-hardwood cuttings in summer give far better results — seed saving is rarely worth the effort for this plant.

🪴

Raised Bed Planting Guides

A 4×8 bed fits 8 plants of Lemon Verbena. See plant counts, spacing grids, and companion pairings for every bed size →

Frequently Asked Questions

When should I plant Lemon Verbena in Haiku, Hawaii? +

In Haiku (Zone 12a), start Lemon Verbena seeds indoors around Thursday, November 20, 2025 and transplant outdoors around Thursday, January 15, 2026.

What is the last frost date for Haiku, Hawaii? +

The average last spring frost date for Haiku, Hawaii (ZIP 96708) is around Thursday, January 1, 2026. This is based on NOAA climate normals for USDA Zone 12a.

How long does Lemon Verbena take to grow? +

Lemon Verbena typically matures in about 120 days from transplanting. In Haiku, that means you can expect harvest around Thursday, January 15, 2026 plus 120 days.

Should I start Lemon Verbena indoors or direct sow in Hawaii? +

Lemon Verbena should be started indoors 6 weeks before your last frost date. In Haiku, that means starting around Thursday, November 20, 2025.

📚 More Lemon Verbena Planting Guides

🗺️

Lemon Verbena in Hawaii

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 12a Lemon Verbena Guide

All cities in your zone · Avg dates

→

Other Plants for Haiku

Blackberry Blueberry Raspberry Strawberry Basil Chamomile Chives Cilantro Dill Lavender Lemon Balm Marjoram Mint Oregano Parsley Rosemary Sage Tarragon Thyme Acorn Squash Artichoke Arugula Asparagus Beefsteak Tomato Beet Bell Pepper Bok Choy Broccoli Brussels Sprout Butternut Squash Cabbage Cantaloupe Carrot Cauliflower Cayenne Pepper Celery Cherry Tomato Chili Pepper Collard Green Common Bean Cucumber Eggplant Endive Fennel Garlic Grape Tomato Green Bean Habanero Pepper Head Lettuce Heirloom Tomato Honeydew Melon Jalapeño Pepper Kale Kohlrabi Leaf Lettuce Leek Lima Bean Mustard Okra Onion Parsnip Pea Poblano Pepper Pole Pea Potato Pumpkin Radicchio Radish Rhubarb Roma Tomato Rutabaga Serrano Pepper Shallot Snap Pea Snow Pea Spaghetti Squash Spinach Squash Sweet Corn Sweet Potato Swiss Chard Tomato Turnip Watermelon Zucchini Sunflower Marigold Zinnia Nasturtium Cosmos Echinacea (Coneflower) Petunia Black-eyed Susan Apple Tree Pear Tree Peach Tree Plum Tree Sweet Cherry Tree Lemon Tree Borage Lemongrass Ginger Stevia Tomatillo Edamame Fava Bean Mâche Mizuna Sorrel Shishito Pepper Banana Pepper Watermelon Radish Napa Cabbage Popcorn Broccoli Raab Catnip Valerian Bee Balm Anise Lovage Chervil Summer Savory Dahlia Snapdragon Pansy Sweet Pea Morning Glory Hollyhock Larkspur Bachelor Button Columbine Impatiens Salvia (Annual) Sweet Alyssum Celosia Lupine Verbena Elderberry Grape Vine Red Currant Gooseberry Serviceberry Fig Tree Avocado Tree Persimmon Tree Olive Tree

Growing Lemon Verbena in Zone 12a

Lemon Verbena (Aloysia citrodora) is a popular garden vegetable. In Haiku, Hawaii, which is in USDA Hardiness Zone 12a, you should start seeds indoors around Thursday, November 20, 2025.

Your average last frost date is Thursday, January 1, 2026. Plan to transplant your Lemon Verbena seedlings outdoors around Thursday, January 15, 2026, about 2 weeks after your last frost date.