
Sweet Pea Promise
Sweet Pea 'Promise'
Lathyrus odoratus
Promise is a bi-colored, pink and white, beautifully scented sweet pea. Eye catching in a vase or in the garden. Bred by Roger Parsons.
The red petals fade quickly in the sun, so harvest when there are at least 2 buds still unopened.
Details
Plant type: Hardy annual
Height: 6-8 feet
Plant spacing: 6-8”
Site: full sun (or partial afternoon shade in hotter zones)
Soil & Water: fertile and moist, but well-draining
Pinch: when there are 4 pairs of true leaves
Approx Promise Sweet Pea seeds per packet: 10
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Safety: Sweet peas, just like many plants we grow in our gardens, are toxic. Sweet pea seeds and any part of the plant should not be ingested.
Featured product


These are the same Rootrainers I use here at Sweet Pea Gardens. I rely on them season after season to start my sweet peas seeds — and they’ve outlasted every hobby tray I’ve ever tried.
Each set includes one sturdy tray and eight hinged books that open like a little greenhouse journal, revealing strong roots. The design encourages deep root systems, minimizes shock at transplanting, and lasts for years.
This is a professional-grade Rootrainer system — built to withstand repeated use, with heavier plastic and a sturdier design than typical consumer trays.
Includes:
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1 reusable tray (3.5″ deep)
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8 “books” (4 cells per book = 32 cells total)
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Comes ready assembled
Product Details:
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Tray depth: 3.5″ (approx. 8.9 cm)
- Cell depth: 5"
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Cells per book: 4 × 8 books (32 cells total)
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Material: durable, reusable plastic
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Long-lasting professional quality





