The other day I wrote about crop rotation, it’s importance, and it’s benefit in the garden so today I thought we’d begin looking at the individual families of vegetables and how they fit into the grand scheme of things. Since it is probably the most popular family, because of one of its members (the tomato), we’ll start discussing the nightshade or solanaceae family. Calling this family the nightshades makes them sound a little like some sort of super villain from the movies but no, we’re talking fruit and vegetables here.
The Solonaceae (Nightshade) Family
The Solanaceae family has many of the most popular vegetables in home gardens. Obviously there is the tomato which is probably the number one plant in the vegetable garden (remember it really is a fruit). There are also the peppers which are well loved by those who can take the heat and even those who can’t! Potatoes are also in this family which are grown for the tubers and not the fruit like other family members. This family also includes the tomatillos and eggplants. All of these plants are in the nightshade/solanaceae family and thus are susceptible to the same diseases. They also have many of the same nutrients needs.
The Rodale’s Ultimate Encyclopedia of Organic Gardening (an affiliate link to a great book!)
recommends preceding the solanaceae with a grain or grass crop and follow with legumes. Legumes (like beans and peas) fix nitrogen back into the soil if they are allowed to decay and the remains are worked back into the soil. Tomatoes are heavy feeders and will deplete the soil of the nutrients they use which makes the same location a poor on to replant the same crop in unless the soil is replenished with amendments.

Possible Diseases and Problems
There are no shortage of challenges with members of this family. Diseases can frequently cross between these types of plants which makes rotating crops very important. Many of these diseases can reside in the soil from season to season and the rotation of crops gives them time to diminish between plantings.
Here are some of the diseases and issues the nightshade family may have problems with:
- Verticillium wilt
- Fusarium wilt
- Early Blight
- Late Blight
- Blossom End Rot
- Scab (on potatoes)
- Tobacco Mosaic Virus (Yep, tobacco is a relative. And no, smoking does not count as a vegetable serving)
- Nematodes (marigolds help deter them)
- Insects: aphids, spider mites, hornworms, flea beetles, cutworms
This list is not complete but mentions a few of the more common pest and disease issues affecting tomatoes, peppers, potatoes, and other members of the solonaceae family.
Is the tomato the number one plant in your vegetable garden?
A Garden Update: Peppers, Tomatoes, and Tomatillos
The vegetable garden is finally taking off! Even though it feels like things have been moving slowly, we’re already seeing exciting progress — tomato plants are starting to flower, and our pepper plants are showing off their first baby peppers. This year, I planted around…
Growing ‘Moon and Stars’ Heirloom Watermelon in the Garden
This year I’m really excited about our watermelons. I picked out the ‘Moon and Stars’ variety which not only is reported to be an excellent tasting variety but looks really neat too. ‘Moon and Stars’ are an heirloom variety that acquire a mottled coloring on…
How to Start a Fall Garden From Seeds in Raised Beds
Starting a fall garden is a great thing to do. Especially so when there is so much uncertainty in the world. A fall garden provides food security and is a great way to relieve stress! Fall gardens are not hard to get started but there…
5 Reasons Why Growing Organically in the Home Garden is Better
By now you’ve probably heard about the study that says organically grown vegetables are not any healthier than their “conventionally” grown counterparts. If you haven’t I’ll sum it up in a nutshell. The study examined the nutrients and vitamins present in organic produce and compared…
What Causes Catfacing in Tomatoes?
Before I delve into the catfacing issue let’s clear up a big misconception: catfaced tomatoes do not actually look like catfaces! Now that we’ve covered that important fact that let’s talk about what catfacing is and what causes your tomatoes to look like deformed monstrosities….
How to Direct Sow Squash and Zucchini Seeds
As far as gardening chores go direct sowing squash and zucchini seeds is a very easy task for any home gardener to accomplish. In fact it’s a great one to do with young children who you want to encourage to get outdoors and in the…
Discover more from Growing The Home Garden
Subscribe to get the latest posts sent to your email.