Penhill Watermelon

Floret calls it one of the most beautiful dinnerplate varieties, and the internet agrees every spring when stock vanishes. The color does the selling, watermelon pink and peach washed with lavender, coral, and a faint yellow base, a light blend that shifts as the flower ages. It comes from the same Maritz breeding line as Penhill Dark Monarch, which gives you the same giant ruffled presence in deeper raspberry and plum tones on very strong stems, a fair trade if these pastels read too soft for your work. Even the paperwork is fuzzy. Farm catalogs date it to 2000 while Stanford's registry shows 2006, a gap that may separate introduction from registration. Idlewild sells out and restocks in February, so set a reminder rather than a wish.

A true dinnerplate from Walter H. Maritz's Penhill line in South Africa. Blooms open at 10 inches and up in the AA giant class, and the petals twist and curl so each flower reads slightly different. Floret reports it flowers in abundance for a giant and is highly prolific, with about five days in the vase. Cut when nearly open, since giants rarely finish opening in water. No reliable height figure surfaced in our sourcing, so stake it as you would any dinnerplate, firmly and early. Form is disputed too: the Stanford registry calls it a semi-cactus while most US farms, including Idlewild with ADS code 0110, sell it as an informal decorative. Either way, this is a centerpiece flower, not a bunching workhorse. It suits gardeners and designers chasing one perfect stem.