![3309 Grapevine [FPS] 05.1 (CNY)](http://doubleavineyards.com/cdn/shop/files/3309_038061f8-dfb1-473c-9cba-7b105608c80d_300x300.jpg?v=1759065198)
Couderc 3309 is a standard rootstock in the eastern United States. It is a vigorous male sterile variety with attractive leaves and shoots. Great for decorative arbors where fruit is not wanted.
![101-14 [FPS] 01.1 (10-CNY) Grapevine](http://doubleavineyards.com/cdn/shop/files/101-14_1_f81a0e33-5c90-430b-add1-bfd7207ecdac_300x300.jpg?v=1759065193)
Standard rootstock in Eastern US. Vigorous mostly sterile female variety with attractive leaves and shoots. Used for decorative arbors where fruit is not wanted, does well on clay soils.
![Riparia Grapevine [FPS] 04.1 (10-CNY)](http://doubleavineyards.com/cdn/shop/files/riparia_1_a2007b16-bcbd-460a-b513-aae966c6197d_300x300.jpg?v=1759065637)
Riparia is shallow-rooted, highly resistant to phylloxera and tolerant of water logged soil. It is most often used in grafting when vigor control is desired in order to produce high quality fruit on vigorous scion varieties.
1103P rootstock provides high scion vigor and is tolerant of high alkalinity (high pH soils), high salinity (salt content), and cotton root rot (generally an issue in high pH soils). It is poor at taking up potassium from the soil and can be used to reduce wine must pH where desired.
