White Supreme Sweet Pea Plants
- Variety: White Supreme
- Type: Spencer
- Colour: Pure, clean white with no cream tinge
- Scent: Medium. A classic, gentle sweet pea fragrance
- Flowers: Large, waved Spencer blooms. 3–4 per stem, clean form
- Stems: Long, straight, and strong. Good for cutting and showing
- Height: 2m (6–7ft) with support
- Flowering: Late June to September with regular picking
- RHS AGM: No
- Show class: Spencer — NSPS Class 1, White
- Bred by: Unwins
- Sold as: Jumbo plug plants, hand-sown by us
- Plant outdoors: After last frost
- Delivered: March to May by next-day courier. Collection from Castle Cary also available
White Supreme – The Clean White Spencer
White Supreme is a pure, clean white Spencer with no cream tinge, no blush, and no hint of colour anywhere. The blooms open white, stay white through their life, and drop white. In a world where most so-called white flowers carry a trace of something else, that consistency is worth noting. It sits in NSPS Class 1 (White) alongside White Frills, but where White Frills has heavily ruffled petals and a romantic character, White Supreme is the classical alternative. Smoother petals, cleaner silhouette, a flower that looks as though it was drawn rather than tousled.
Unwins bred it and the Spencer form is reliable: large, waved blooms on long, straight stems, 3–4 flowers per stem, with a medium-strength fragrance that is clean and gentle. White Supreme grows to about 2m with support and flowers from late June through September. The stems are strong enough for exhibition and long enough for any vase. It is one of those varieties that does nothing to draw attention to itself and does everything you need it to do. If you want a white sweet pea that simply works, this is it.
The Value of White
Every good cutting garden needs a white sweet pea, and every mixed planting benefits from one. White is not a colour you choose for excitement. You choose it for what it does to the colours around it. Three stems of White Supreme dropped into a jug of deep purples and maroons turns a heavy arrangement into something balanced. A white sweet pea next to a dark one on the same support breaks up the density and lets each colour breathe. The effect is the same in a border: plant White Supreme between richer-toned varieties and the whole row lifts.
White Supreme is also the most versatile variety for occasions. It sits with any colour scheme, any room, any setting. Wedding flowers, dinner-table arrangements, a simple jug on a windowsill. The clean whiteness means it never fights the surroundings. For growing, picking, and support guidance, see our sweet pea growing guide.
Garden and Vase Partners
White Supreme makes every other variety look better. Windsor (maroon-claret Spencer) is the most dramatic pairing: dark against light, old-fashioned and handsome. Lord Nelson (navy-blue Spencer) gives a crisp nautical combination, cool and clean. Restormel (bright cerise-pink Spencer) adds warmth, with the white throwing the cherry tone into sharp relief.
In a larger garden, White Supreme on a pergola or arch alongside wisteria creates a succession of white and purple through the season. The wisteria flowers first in May, then the sweet peas take over from late June. The white sweet pea blooms pick up the falling wisteria theme and carry it through the summer, and the two plants share a support without trouble as long as the wisteria is established before you add the sweet peas.
Why Grow Ashridge Sweet Peas?
Our sweet peas are not mass-produced. The seed, which we collect ourselves, is hand-sown at two seeds per plug. After germination, the weaker seedling is removed. Every plant is then pinched out to encourage bushy growth and hardened off before dispatch. What you are buying are sturdy, garden-ready jumbo plug plants that have had the best possible start.
Your sweet peas arrive by next-day courier between March and May, packed in purpose-designed recycled cardboard packaging. They are ready to plant from the moment they arrive. If anything is not right, we have real people on the phone in Somerset who will sort it out. We are a Which? Best Buy plant supplier and we hold a Feefo Platinum Service Award. Both earned by keeping customers happy, year after year.
Frequently Asked Questions
How does White Supreme compare to White Frills?
Both are pure white Spencers in NSPS Class 1, but the petal form is different. White Supreme has smoother, rounder petals with a clean, classical silhouette. White Frills has heavily ruffled, frilled edges and a more romantic, textured look. Both are good cut flowers. White Supreme suits formal arrangements and show work; White Frills suits softer, more naturalistic displays.
Does White Supreme have a scent?
A gentle, classic sweet pea fragrance at medium strength. You will notice it from a bunch on the table without it dominating the room. White sweet peas tend to carry their scent quietly, and White Supreme is no exception. If you want white blooms with heavier perfume, pair it with Mrs Collier (primrose-cream Grandiflora), which carries one of the richest scents in the collection.
Is White Supreme good for showing?
The stems are long and straight, the blooms well-formed, and the white is consistent with no off-colour petals. It competes well in NSPS Class 1 and the clean form makes it easy to stage a matched vase. The flowers hold their shape for several days after cutting, which gives you a reasonable window between cutting and bench day.
Should I pinch out sweet pea plants?
We pinch out all our sweet pea plugs before dispatch, so White Supreme arrives ready to grow without further pinching. The pinch point removes the growing tip, which encourages the plant to branch from the base rather than growing as a single stem. More stems mean more flowers. If you are growing from seed yourself, pinch at the second or third pair of leaves.
Do sweet peas come back every year?
Sweet peas are annuals. White Supreme gives you one season of flowers from late June to September, then it is finished. At the end of the season, cut the top growth and compost it, but leave the roots in the soil. Sweet pea roots harbour nitrogen-fixing bacteria that improve the ground for the next crop. For fresh plants each spring, browse our sweet pea collection.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
- Variety: White Supreme
- Type: Spencer
- Colour: Pure, clean white with no cream tinge
- Scent: Medium. A classic, gentle sweet pea fragrance
- Flowers: Large, waved Spencer blooms. 3–4 per stem, clean form
- Stems: Long, straight, and strong. Good for cutting and showing
- Height: 2m (6–7ft) with support
- Flowering: Late June to September with regular picking
- RHS AGM: No
- Show class: Spencer — NSPS Class 1, White
- Bred by: Unwins
- Sold as: Jumbo plug plants, hand-sown by us
- Plant outdoors: After last frost
- Delivered: March to May by next-day courier. Collection from Castle Cary also available
White Supreme – The Clean White Spencer
White Supreme is a pure, clean white Spencer with no cream tinge, no blush, and no hint of colour anywhere. The blooms open white, stay white through their life, and drop white. In a world where most so-called white flowers carry a trace of something else, that consistency is worth noting. It sits in NSPS Class 1 (White) alongside White Frills, but where White Frills has heavily ruffled petals and a romantic character, White Supreme is the classical alternative. Smoother petals, cleaner silhouette, a flower that looks as though it was drawn rather than tousled.
Unwins bred it and the Spencer form is reliable: large, waved blooms on long, straight stems, 3–4 flowers per stem, with a medium-strength fragrance that is clean and gentle. White Supreme grows to about 2m with support and flowers from late June through September. The stems are strong enough for exhibition and long enough for any vase. It is one of those varieties that does nothing to draw attention to itself and does everything you need it to do. If you want a white sweet pea that simply works, this is it.
The Value of White
Every good cutting garden needs a white sweet pea, and every mixed planting benefits from one. White is not a colour you choose for excitement. You choose it for what it does to the colours around it. Three stems of White Supreme dropped into a jug of deep purples and maroons turns a heavy arrangement into something balanced. A white sweet pea next to a dark one on the same support breaks up the density and lets each colour breathe. The effect is the same in a border: plant White Supreme between richer-toned varieties and the whole row lifts.
White Supreme is also the most versatile variety for occasions. It sits with any colour scheme, any room, any setting. Wedding flowers, dinner-table arrangements, a simple jug on a windowsill. The clean whiteness means it never fights the surroundings. For growing, picking, and support guidance, see our sweet pea growing guide.
Garden and Vase Partners
White Supreme makes every other variety look better. Windsor (maroon-claret Spencer) is the most dramatic pairing: dark against light, old-fashioned and handsome. Lord Nelson (navy-blue Spencer) gives a crisp nautical combination, cool and clean. Restormel (bright cerise-pink Spencer) adds warmth, with the white throwing the cherry tone into sharp relief.
In a larger garden, White Supreme on a pergola or arch alongside wisteria creates a succession of white and purple through the season. The wisteria flowers first in May, then the sweet peas take over from late June. The white sweet pea blooms pick up the falling wisteria theme and carry it through the summer, and the two plants share a support without trouble as long as the wisteria is established before you add the sweet peas.
Why Grow Ashridge Sweet Peas?
Our sweet peas are not mass-produced. The seed, which we collect ourselves, is hand-sown at two seeds per plug. After germination, the weaker seedling is removed. Every plant is then pinched out to encourage bushy growth and hardened off before dispatch. What you are buying are sturdy, garden-ready jumbo plug plants that have had the best possible start.
Your sweet peas arrive by next-day courier between March and May, packed in purpose-designed recycled cardboard packaging. They are ready to plant from the moment they arrive. If anything is not right, we have real people on the phone in Somerset who will sort it out. We are a Which? Best Buy plant supplier and we hold a Feefo Platinum Service Award. Both earned by keeping customers happy, year after year.
Frequently Asked Questions
How does White Supreme compare to White Frills?
Both are pure white Spencers in NSPS Class 1, but the petal form is different. White Supreme has smoother, rounder petals with a clean, classical silhouette. White Frills has heavily ruffled, frilled edges and a more romantic, textured look. Both are good cut flowers. White Supreme suits formal arrangements and show work; White Frills suits softer, more naturalistic displays.
Does White Supreme have a scent?
A gentle, classic sweet pea fragrance at medium strength. You will notice it from a bunch on the table without it dominating the room. White sweet peas tend to carry their scent quietly, and White Supreme is no exception. If you want white blooms with heavier perfume, pair it with Mrs Collier (primrose-cream Grandiflora), which carries one of the richest scents in the collection.
Is White Supreme good for showing?
The stems are long and straight, the blooms well-formed, and the white is consistent with no off-colour petals. It competes well in NSPS Class 1 and the clean form makes it easy to stage a matched vase. The flowers hold their shape for several days after cutting, which gives you a reasonable window between cutting and bench day.
Should I pinch out sweet pea plants?
We pinch out all our sweet pea plugs before dispatch, so White Supreme arrives ready to grow without further pinching. The pinch point removes the growing tip, which encourages the plant to branch from the base rather than growing as a single stem. More stems mean more flowers. If you are growing from seed yourself, pinch at the second or third pair of leaves.
Do sweet peas come back every year?
Sweet peas are annuals. White Supreme gives you one season of flowers from late June to September, then it is finished. At the end of the season, cut the top growth and compost it, but leave the roots in the soil. Sweet pea roots harbour nitrogen-fixing bacteria that improve the ground for the next crop. For fresh plants each spring, browse our sweet pea collection.
