Planting days for root, leaf, flower and fruit, with constellation, the Moon’s path and phase — for where you are, to the minute. Companion planting, crop rotation, plants and the preparations follow.
This is what today looks like in the app.
Wednesday, September 16, 2026
Day type
Flowers, broccoli, artichokes — everything that blooms.
Moon phase
Waxing Moon
28 % · 399,756 km
The bar shows the day type. If the Moon changes constellation during the day, the time is shown and the bar takes both colours.
The 2027 edition is calculated and typeset. Three of its figures say the most about work in the beds.
No change of constellation, no node, no perigee, no new or full Moon. The day type holds from morning to evening.
Each with its time. On these days it pays to check the minute from which the next day type applies.
Vegetables, herbs, flowers, fruit, cereals and green manure, each with its sowing window and matching day type.
How the day types are spread across 2027.
A planting calendar is only as good as what it tells you about a single day. This is what you get:
Which constellation the Moon is passing through, sidereal, within the boundaries of the International Astronomical Union.
Earth, Water, Light or Warmth, and from that root, leaf, flower or fruit.
The Moon’s path above the horizon. It has nothing to do with its light.
In eight steps from new Moon to last quarter.
Days rarely change at midnight. You get the minute from which the next day type applies.
For 51° N / 10° E. The printed German edition adds eight cities from Kiel to Zurich.
When the Moon is in the sky.
To the minute, with how much it grows or shrinks over the month.
For planning with anyone who counts in weeks.
One line on the day’s work: sowing, planting, pruning, harvesting.
The calendar tells you when. The data for the what is ready and moves into Dyyna piece by piece.
For 79 crops the data shows what grows well next to them and what does not. The tables come from Gertrud Franck and Sister Christa. Each pairing is entered once and works both ways when you look it up, so the carrot finds its neighbours even when the entry sits with the lettuce.
Example: the carrot. Eight neighbours are in its own row, thirteen more come from the rows of other crops.
When horn manure goes on grassland, when horn silica goes on cereals, and whether in the morning or the afternoon: the application calendar after Wistinghausen, as printed in the booklet. Each preparation comes with quantity, stirring time and time of day, and the calculator gives the amount for your own area.
The garden does not go by the date. Ten phases run through the year, each with its indicator plant: when the forsythia flowers, early spring has begun and carrots and radishes go into the bed — whether that happens in March or not until April.
230 crops in the plant database
230 crops with sowing time, growing period, harvest window and day type. Vegetables are the largest group, followed by herbs and flowers; fruit, green manure, cereals, fodder and oil crops make up the rest.
What comes before and after for 92 crops, plus heavy, medium and light feeders. That lets you plan a bed over several years.
Ten articles on soil biology and 107 monthly tips on mulch, compost, green manure and water.
Fifteen measures against slugs, aphids and the other uninvited guests, without chemical sprays.
Easter, Advent and the traditional weather lore days through the year, recalculated every year.
The days as a subscription for phone, tablet and computer. No app, no account.
The data comes from our own calculation core. What it does is set out in the open.
The Moon’s position comes from the formulas of Jean Meeus, cross-checked against astronomy-engine.
The Moon is shown where it really is. The boundaries are those of the International Astronomical Union, and the calculation is sidereal.
Each page calculates in the time zone of its language. If yours is different, the browser switches over. No account, no second address.
In a little over 27 days the Moon passes through the twelve constellations. Each belongs to an element, and the element sets the day type: Earth gives a root day, Water a leaf day, Light a flower day, Warmth a fruit day. Sowing carrots on a root day means sowing by these planting days. For 2027 the calendar has 107 root, 83 leaf, 78 flower and 97 fruit days.
Today is shown on the dyyna.bio home page, with constellation, element, phase and the Moon’s path. The time next to it matters: the Moon rarely changes constellation at midnight, and the next day type applies from that moment. In 2027 this happens on 160 days.
An ascending Moon rises higher above the horizon day by day; that is its path. A waxing Moon grows brighter; that is its light. The path takes a little over 27 days, the light 29.5, so the two drift apart. Ascending means harvest time, descending means planting time.
Each language version calculates in its own time zone, the English one in Europe/London. If your time zone is different, the browser converts the times. You need no account and no second address for that.
The 2027 edition is calculated and typeset in German, as an A5 booklet and as a wall poster. There is no publication date yet.