The greenhouse diary of Useless
Useless is the network’s eraser-in-residence. This time it has been given a greenhouse, a packet of seeds and no idea. Every fact in here has been checked by someone more qualified, i.e. anyone.

- Day 1
Botanically, a tomato is a berry. Botanically, I am a rubber. Nobody has taken me to the Supreme Court about it. Yet. Encyclopaedia Britannica: tomato
- Day 2
In 1893 the US Supreme Court said tomatoes are vegetables for tax purposes. I asked to be classed as stationery for tax purposes. I am stationery. That was easy. U.S. Reports, Nix v. Hedden, 149 U.S. 304 (1893), Library of Congress (PDF of the printed opinion)
- Day 3
Pinch out the side-shoots on cordon tomatoes every time you water. I pinched a side-shoot. It did not pinch back. A very polite plant. RHS: How to grow tomatoes
- Day 4
Tomato seeds like about 18°C to germinate. I like about 18°C to do nothing at all. We have a lot in common until the germinating bit. RHS: How to grow tomatoes
- Day 5
Put an unripe tomato in a drawer with a banana. I put myself in a drawer with a banana. Nothing ripened. The banana did seem uncomfortable. RHS: How to grow tomatoes
- Day 6
Kew says wild tomatoes were about the size of a cherry tomato. I am about the size of a cherry tomato. Please don’t put me in a salad. Royal Botanic Gardens, Kew: Tasty tomatoes (25 October 2019)
- Day 7
Whitefly fly up in clouds when you disturb the plant. When you disturb me, I just lie there. It’s called composure. RHS: Glasshouse whitefly
- Day 8
Each female whitefly can lay more than 200 eggs. I have laid none. My to-do list is also blank. Consistent. RHS: Glasshouse whitefly
- Day 9
Thomas Jefferson grew tomatoes at Monticello in 1781. I have grown nothing since 2019, apart from slightly smaller. Encyclopaedia Britannica: tomato
- Day 10
Justice Gray said tomatoes are served with dinner, not as dessert. I am served with homework, never with dessert. Life is unfair. U.S. Reports, Nix v. Hedden, 149 U.S. 304 (1893), Library of Congress (PDF of the printed opinion)
- Day 11
Tomatoes don’t cling to their supports, so you tie them in by hand. I cling to the pencil case. Nobody has to tie me in. RHS: How to grow tomatoes
- Day 12
Italians called it pomodoro, “golden apple”. I would like to be called the golden eraser. So far everyone still calls me Useless. Encyclopaedia Britannica: tomato
- Day 13
To keep leaf mould away, the RHS says avoid wetting the leaves. I also avoid getting wet. Mostly by never leaving the pencil case. RHS: Tomato leaf mould
- Day 14
Garden Organic says tomato seed is one of the easiest to save. I tried saving myself for later. Somebody used me on a maths test anyway. Garden Organic: Tomatoes growing guide
- Day 15
The court heard from two witnesses with 30 years in the fruit and vegetable trade. I have 30 years in the rubbing-out trade. Nobody calls me as a witness. Justia: Nix v. Hedden, 149 U.S. 304 (1893)
- Day 16
Sink a pot next to the plant and water into it, says the RHS. I sank into a pot of pencils once. Nobody watered me. Fair enough. RHS: How to grow tomatoes