Here is a list of some of the vegetables that you can grow in your homemade hydroponic system. I have put the recommended nutrient concentration (CF) beside each of the vegetables, grow within these ranges for the best produce.
Details of specific hydroponic system requirements are also detailed below.
Vegetables with similar CF ranges can easily be grown in the same hydroponic system to give you an amazing variety of produce.
Beans CF 18-25
Climbing beans produce a high yield in a small ground area by using air space. This makes them a good subject for a greenhouse hydroponic system. Butter beans grow especially well.
Beetroot CF 18-22
Beetroot grown hydroponically has a superb flavour. Large tender roots are easily grown in an aggregate filled system taking between two and three months to reach a edible size.
Broccoli CF 18-24
Broccoli will grow well over a long period of time, cut the main head early so that a number of small heads will form.
Brussels Sprouts CF 18-24
Brussels Sprouts should be grown outside as they require a cold period to ensure that the sprouts are small and compact, when they form.
Cabbages CF 18-24
Cabbages are easily grown all year round, however they tend to use up a large amount of space. If you want to keep a supply of fresh cabbage available, keep sowing a few extra plants every two or three weeks.
Capsicum CF 20-27
Capsicums grow from spring to autumn, leave plenty of room and ensure they get lots of sun if you want the fruit to colour.
Carrots CF 17-22
You should only grow carrots if you have plenty of space available in your growing container as they need to stay in position for longer than most crops. Sand is a good medium to use, thin them at an early stage then allow the rest to develop to a size your growing container can hold. You will find that even the largest carrots are juicy and delicious with no sign of woodiness.
Cauliflower CF 18-24
Cauliflowers grown hydroponically become extremely large so unless you especially want to grown them hydroponically, do not put too many in. They will need up to 500cm of growing space. You will need to provide some shade over the heart as it forms to keep it white.
Celery CF 18-24
Gravel filled aggregate systems as well as NFT systems can be used to grow celery. Generally the plants will need spraying for rust at some stage.
Cucumbers CF 16-20
The smaller varieties of cucumber are the most suitable for greenhouse systems, as you can train them upwards over a frame. Use a hybrid variety, some are resistant to mildew and you will find that other will develop to an enormous size if you let them.
Leeks CF 16-20
Leeks have a lengthy growth cycle and are compact and easy to grow hydroponically. Leeks are best grown in an aggregate filled system.
Lettuce CF 8-12
Regular sowing of lettuce are needed to keep your home supplied. You can remove leaves leaving the plants in the system if only small quantities are required. Grown in a greenhouse fresh lettuce can be available at anytime. You may need to keep the plants shaded in hot areas, since they do not like too much heat.
Marrows CF 10-20
Zucchinis, Courgettes and other types of marrow grow so quickly hydroponically that it is necessary to restrict their growth, keep picking zucchinis before they grow too large otherwise their growth cycle will stop. One of two zucchini plants are enough to keep most families supplied.
Onions CF 18-22
Onions require too much space for most hydroponic systems and will grow well if you are keen to have some in your garden. Spring onions especially are good to have growing for use in salads.
Peas CF 14-18
Peas grow really easily, plant them behind low growing plants with a frame to grow up.
Potatoes CF 16-24
Potatoes grow quickly in aggregate filled system and require large growing containers.
Pumpkin CF 18-24
Pumpkins will spread rapidly and become very large, ensure you allow plenty of space and train over a frame if possible
Radish CF 16-22
Radishes will grow extremely quickly so just plant a few at a time. You can grow them in water with no nutrients added for the first weeks.
Spinach CF 18-23
Spinach is easily grown all year round. You can remove leaves leaving the plants in the hydroponic system.
Silverbeet CF 18-24
Silverbeet are easily grown all year round, however they tend to use up a large amount of space. You can easily remove leaves from the plants while leaving them growing in the hydroponic system.
Sweetcorn CF 16-22
Sweetcorn takes up a large amount of space, If you would like to try it in your system make sure that it is carefully placed so the other plants will not be deprived of light by the rapidly developing corn
Tomatoes CF 22-28
Tomatoes grow extremely well in hydroponic systems. If placed in a greenhouse with plenty of light a tomato plant will produce fruit all year round. For heavy cropping allow the lateral immediately below a fruit set to develop and remove any other laterals up to the developing fruit