The two-toothed is a very willing to bloom yellow daisy family, which is particularly popular in balcony boxes and planters. The easy-care perennial bloomer shines with flowers from early summer until well into autumn. The golden-yellow filigree flower heads are strongly reminiscent of those of daisies or cosmeuse. They grow to be one to three centimeters. There are also orange types. The growth of the plant is overhanging, which is why the Goldmarie looks great in hanging baskets. The shoots can grow up to 80 cm long, but the plant needs ideal conditions for this. The two-toothed plant, which owes its name to the teeth on the seeds, forms dense cushions and achieves a good long-distance effect, but can also be combined well with other plants. Whether in a planter, in the garden in flower beds or borders or even on graves,

Bidens – Arten

  • B. gardneri – orange, very fine and delicate flowers
  • B. pilosus – white flowers with yellow interior
  • B. connata – brown-yellow flowers, often tinged with red
  • B. ferulifolia ‘Big Sunlight’ – yellow-orange flowers
  • B. ferulifolia ‘Goldilocks Rocks’ – bright yellow flowers
  • B. ferulifolia ‘Golden Goddess’ – medium yellow flowers
  • B. ferulifolia ‘Olympic Star’ – gold colored flowers
  • B. ferulifolia ‘Yellow Glow’ – deep yellow flowers

The care of two teeth or Goldmarie

Caring for Bidens ferulifolia is not difficult. You have to know that the plant has a high need for light, water and fertilizer in summer. If you do these three things, nothing stands in the way of a great flower. In good conditions, the Goldmarie grows quickly and vigorously and takes up a lot of space. She then likes to crowd out her neighbors. So you have to come up with something or choose the rest of the planting carefully.


The Goldmarie needs a warm and sunny location. Plants you have grown yourself or bought very young should not be exposed to full sun right away. Later, the heat and direct midday sun no longer bother them.

  • Young plants tend to be partially shaded, no direct midday sun
  • Adult plants sunny, also tolerate high heat and sun
  • Partial shade and shade are tolerated, but the plants do not flower as profusely there
  • Sun is best, but then the water requirement is very high.

plant substrate

The two-tooth does not make any great demands on the plant substrate. Standard stoves, balcony plant soil or garden soil are usually sufficient. It is good to make the substrate a little more permeable so that no standing water can develop. However, the soil must not be too permeable either, otherwise the nutrients will be washed out too quickly.

  • Fresh, permeable, nutrient-rich and humus-rich soil
  • Make uniform soil more permeable with sand or grit
  • pH 5 to 6


To avoid Bidens ferulifolia crowding out the other plants in the container, leave the plant in the plant pot, but choose a larger one or two numbers than the current one. In this way, plenty of roots can still be formed, but the other plants also have room to develop. It works very well, I tested it last year. I had planted a Goldmarie together with a magic bell ‘Bella Limoncella’ or ‘Lemon Slice’ and a magic snow ‘Diamond Frost’, it looked really great, fresh and fruity.

  • For the usual hanging baskets you need three plants
  • The bright yellow two-teeth look very nice in combination with plants of the same color or a similar color or with a large color scheme, eg in blue or red.
  • Planting distance in the box 20 cm

watering and fertilizing

Watering and fertilizing are both important for the buck to thrive. Standing wetness is unfavorable, but dry balls are just as bad. The substrate should always be slightly damp, but never really wet, at least not for long periods of time. The roots don’t like that, the plant complains. Fertilizing is also important. Although it is also possible without or with little fertilizer, the willingness to bloom is significantly greater with fertilizer. I tested it once. A basket not fertilized and a fairly regular weekly. The difference was obvious.

  • In sunny locations, the water requirement is very high.
  • In high heat and sunshine it may be necessary to water twice a day, in the morning and in the evening.
  • The lack of water is easy to recognize from the limp hanging shoots.
  • Drought leads to flower drop
  • Waterlogging is not tolerated
  • Heavy feeders, need a lot of fertilizer – PK emphasized
  • When properly established – fertilize weekly

To cut

With a one-year culture, cutting is largely unnecessary. Only the faded flower heads should be removed regularly. This encourages the formation of more flowers. You don’t have to do that, because the faded remains are not very noticeable. However, I have found that the plants flower longer and simply look better. With the density of the buds, that’s quite a task. I always place the containers on the garden table in front of me and pinch off the blossoms with my fingernail. I turn the container slowly so that I can get at it from all sides. A very soothing simple work to switch off from stress and hectic.

  • A partial pruning in July or August ensures that the two-tooth flowers longer.
  • If you cut off the shoot tips in spring, you will ensure bushier growth.


In principle, overwintering is possible, but not really worth it, since the plants simply do not live long enough. It is better to take cuttings and grow a new plant over the winter.

  • Cut back heavily
  • Can stay in their planters
  • Overwinter at 15°C
  • Don’t make it too dark
  • Water a little, but don’t let it dry out
  • Cut back again in the spring and be sure to plant in new soil.
  • Water more and make it lighter.
  • After the ice saints, the plants can go outside again.


Propagation is by seed or cuttings. Both work very well. The seeds are very small, barely visible when sown. One has to estimate how they are distributed. Later you have to carefully separate the seedlings if they are too close together. It is better to sow enough and remove those where the dwarfs are too dense. Incidentally, the seeds can be taken from your own plants from the previous year.


  • Already from January/February
  • Breitflächig aussäen
  • Sow under glass
  • Germination time 12 to 18 days
  • 20 °C

Cuttings – head and partial cuttings

For dense, bushy plants, plant two to three cuttings together

diseases and pests

The two-toothed is a quite robust plant. Diseases are very rare and mostly due to care errors. Pests, on the other hand, appear again and again, above all aphids. When it comes to pests, it’s important to fight them as soon as you spot them so they don’t have a chance to spread.

  • Whitefly – since yellow stickers don’t really help outdoors, it’s better to use a systemic agent. The plant absorbs the active ingredient that is administered with the irrigation water. This is how the agent gets into the insects sucking on the plants, which then die. The method is quite reliable and the 2-tooth is quite robust and tolerates the pesticides quite well.
  • Thrips – the systemic agents also work on thrips They are also sucking insects.
  • Aphids – aphids are also combated in this way. If you only have aphids on the plants, you can first try to wash them away with a strong jet of water. Of course, that’s not such a good idea on the balcony, but if you can put the box or container in the garden on the lawn, it works very well, in the bed anyway. This is often enough to decimate the lice.

The two-tooth is one of my favorites in planters when it comes to purely yellow plants. I don’t have any problems with watering, since I’ve been using planters with an irrigation system, I don’t have to refill water as often. The plants take what they need and the tube tells me when to water. Fertilizing once a week is also no problem. All in all, these are very low-maintenance and easy-to-grow plants that flower extremely richly and for a long time. I can only recommend them to everyone. For me, they are a must for annual planting. I haven’t hibernated them yet, simply for reasons of space.

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