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The blog

Marmanda's notebook.

Long, sourced articles about the vegetable garden: what to plant and when, which pairings actually hold up, how to read a sowing calendar.

6 min read

Why Do My Tomatoes Have Black Bottoms? Blossom End Rot Explained

Blossom end rot is not a disease, not a fungus, and almost never a shortage of calcium in your soil. It is a water supply problem inside the plant, which changes entirely what you should do about it.

  • Diseases
  • Soil
  • Tomato

6 min read

How Far Apart Should You Plant Tomatoes?

There is no single correct distance between two tomato plants. Here are the three variables that decide it, the spacings most growers work from, and how to adjust them for your own plot.

  • Diseases
  • Small garden
  • Tomato

7 min read

Tomato blight: how to prevent it, and why you cannot cure it

Late blight is not a fungus, and that distinction explains everything else. Its biology sets the terms: liquid water on the leaves and a moderate temperature. Everything that actually works consists of denying it those terms.

  • Diseases
  • Rotation
  • Tomato

4 min read

When to plant tomatoes: the date is not a date

"After the last frost" is not a method. Here are the three signals that actually determine planting time, and how to read them where you live.

  • Calendar
  • Sowing
  • Tomato

Turn the reading into a garden.

Marmanda turns this advice into a dated, placed plan for your own plot.