Gianpaolo Paglia, an agronomist born and bred in Maremma, and Justine Keeling, an English marketing manager, bought the estate in 1997. They started making Morellino di Scansano, with the existing 6 Ha of old and high quality producing vineyards, whilst at the same time planting new vineyards using local varieties such as Sangiovese and Alicante. These new vines were planted at a high density. They also built an modern winery and warehousing in 2002.

Poggio Argentiera is today composed of two estates situated in two different areas of Tuscany's Maremma, near the town of Grosseto. Podere Adua, with the head office, cellar and winery, is close to the Maremma Natural Park, in the coastal region of Grosseto. Podere Keeling is found in the hilly area to the North of the Scansano district, towards Monte Amiata. Although both are in the Morellino di Scansano DOC region, each experiences a very different micro-climate. Podere Adua is only a few kilometres from the sea, a few metres above sea level, where the coastal climatic conditions include hot temperatures, high insulation and little rainfall during the growing season. The soil is sandy-lime with little fibrous matter. Podere Keeling is in a hilly area 250m above sea-level, with a rich, fibrous clay soil, where the micro-climate is generally a little cooler.

Even though Poggio Argentiera is a young winery, it has already acquired an impressive record of awards and critical acclaim, both in Italy and worldwide,(three glasses from Gambero Rosso Slow Food Guide of Italian Wines, “Vini dell'Eccellenza” from the Espresso Guide of Italian wine, 90 points + scores both in the Wine Advocate and Wine Spectator).

• ...Now the Morellino DOC zone can boast a new great wine...” Vini d’Italia 2003 Gambero Rosso - Slow Food
• “Etoile montante dell’appellation Morellino di Scansano...” La Revue du Vin de France 2004
• "...Able winemaking, first by Luca D'Attoma, now by Fabrizio Moltard, has propelled this producer into the front ranks of the Morellino di Scansano appellation...” The Wine Advocate - R.Parker Jr.
• “...Capatosta emerges from 25-year old Sangiovese vines, and spent 13 months in French oak prior to bottling. possesses a Bordeaux-like tannin profile with plenty of structure as well as gorgeously sweet black currant fruit intermixed with lead pencil shavings, leather, and spice box. With terrific texture, intensity, sweetness, ripeness, and balance, it is accesible now, but promises to evolve gracefully for 12-15 years. Impressive!” 92 points.The Wine Advocate - R.Parker Jr.