What are the sun requirements for Lactuca sativa 'Jericho'?

Lactuca sativa 'Jericho' requires Full Sun.

How much water does Lactuca sativa 'Jericho' need?

Lactuca sativa 'Jericho' has Medium water needs.

Lactuca sativa 'Jericho'**'

Jericho Lettuce

Open-pollinated cultivar developed in Israel (Jericho region); the species L. sativa is native to the Mediterranean region

At a Glance

TypeAnnual

HabitUpright

FoliageDeciduous

Height10-12 inches (25-30 cm)

Width6-8 inches (15-20 cm)

Maturity1 years

Key Features

Container Friendly

Maintenancelow

Overview

Lactuca sativa 'Jericho' is Jericho lettuce (Jericho romaine), a romaine (cos-type) annual forming an upright elongated head 10-12 inches (25-30 cm) tall and 6-8 inches (15-20 cm) wide. Dark green thick-textured outer leaves with prominent white midribs and pale green hearts. Slightly savoyed leaf surface. In the daisy family (Asteraceae). Open-pollinated cultivar developed in Israel (Jericho region) — selected for heat tolerance in desert conditions. Seed can be saved. The heat-tolerant romaine: bolts later than most romaine cultivars in warm conditions — tolerates sustained temperatures above 85°F (29°C) that cause other romaines to bolt. The leaves become slightly more bitter in heat but remain edible longer than other cultivars. Romaine type: upright elongated head with crisp thick-ribbed leaves. 70-80 days to mature head, 30-35 days for baby leaf. Succession-sow every 2-3 weeks. Slugs and aphids are primary pests. Not deer-resistant. Non-toxic (edible crop). Full sun to partial shade. Annual. Growth rate is moderate.

Native Range

Open-pollinated cultivar developed in Israel (Jericho region). The species L. sativa is native to the Mediterranean region.

Suggested Uses

Grown in vegetable gardens, raised beds, and containers of at least 2 gallons (8 L). Heat-tolerant romaine — for warmer climates. Open-pollinated. Succession-sow. Non-toxic. Not deer-resistant. Annual.

How to Identify

Identified by an upright elongated romaine head with dark green thick-textured leaves, prominent white midribs, and pale green hearts. Distinguished from butterhead (loose soft round) and crisphead (tight firm round) by the upright elongated form. The heat tolerance distinguishes Jericho from other romaines. In Asteraceae.

Appearance

Size & Dimensions

Height10" - 1'

Width/Spread6" - 8"

Reaches mature size in approximately 1 years

Colors

Flower Colors

yellow

Foliage Colors

green

Fall Foliage Colors

no change

Bloom Information

Bolts in sustained heat — yellow composite flowers (daisy family). Bolting makes leaves bitter. More bolt-resistant than most romaines in warm conditions.

Detailed Descriptions

Flower Description

Yellow, daisy-family composite — only if allowed to bolt; undesirable

Foliage Description

Dark green outer leaves with pale green hearts and prominent white midribs; thick textured, slightly savoyed

Growing Conditions

Sun Requirements

Full Sun Partial Shade

Requires 4-10 hours of direct sunlight daily

• Full Sun: 6+ hours of direct sunlight

• Partial Shade: 3-6 hours of direct sunlight

• Full Shade: Less than 3 hours of direct sunlight

Soil Requirements

pH Range6.0 - 7.0(Neutral)

357912

Soil Types

loam

Drainagemoist

Water & Climate

Water Needs

Medium

Frost Tolerance

hardy

Time to Maturity

70-80 days from seed to mature head; 30-35 days for baby leaf

Care & Maintenance

Care Guide

Full sun to partial shade. Rich moist soil pH 6.0-7.0. Heat-tolerant romaine — bolts later than most in warm conditions. Succession-sow every 2-3 weeks. Open-pollinated — save seeds. Slugs and aphids. Not deer-resistant. Non-toxic. Annual.

Pruning

Harvest the entire head by cutting at the base, or harvest outer leaves by cut-and-come-again. Pull the plant when bolting stalk appears. Succession-sow.