- Species and varieties: Sweet Pea (Lathyrus odoratus) is a flowering plant species known for its fragrant and colorful blooms. There are numerous varieties of sweet pea seeds, including 'Old Spice', 'Mammoth', 'Royal Family', and 'Spencer'. Each variety offers different colors, sizes, and blooming times.
- Hybrid or heirloom: Sweet Pea seeds can be both hybrid and heirloom. Heirloom varieties are often preferred for their strong fragrance and traditional flower forms, while hybrid varieties may offer improved disease resistance and more vigorous growth.
- Pruning and training: Sweet Peas require regular pruning to encourage continuous blooming. Deadheading spent flowers will promote new growth. Training the vines to climb on a trellis or support structure helps keep the plants healthy and maximizes flower production.
- Fertilization needs: Sweet Peas benefit from a balanced fertilizer applied at planting and again during the growing season. A fertilizer high in phosphorus can help promote blooming. Avoid excessive nitrogen, as it can lead to lush foliage at the expense of flowers.
- Hardiness zones: Sweet Peas are best suited for USDA Hardiness Zones 2-11. They thrive in cooler climates and can tolerate light frosts, making them ideal for early spring planting in many regions.
- Climate requirements: Sweet Peas prefer a temperate climate with cool to mild temperatures. They grow best in full sun to partial shade and require well-drained soil. In hotter climates, they may benefit from some afternoon shade to prevent overheating.