Maxibel French filet beans are unsurpassed in flavour and great for fresh market growers and gardeners alike. Straight, dark-green filet bean pods are stringless and about 18cm (7) long on sturdy bush plants. Straight, dark-green filet bean pods are stringless and about 18cm (7) long on sturdy bush plants. Maxibel plants yield in a huge but concentrated harvest. This is an excellent choice for multiple spring sowingsstagger planting times and sow rows every two to three weeks. This will result in a much longer harvest window. Try growing Maxibel in larger containers or raised beds, too.