Below is a screenshot of a cross that produces a Thavnairian Onion seed (click to enlarge).

Planting a Mimett Gourd seed next to a Nymeia Lily seed (or vice-versa) will yield a Thavnairian Onion seed when you harvest either the Mimett Gourd or the Nymeia Lily. If a seed has a loop (meaning you can use a seed to obtain more of the same seed) the cross will be highlighted in yellow.

As of Patch 2.3 every cross can produce different seeds if the crossbreed was successful. In the example shown above the Alternate Cross is Shroud Tea which means there is also a chance you will obtain a Shroud Tea seed instead of a Thavnairian Onion seed upon harvest.

Definitions of each column:

Harvested Plant: This is the seed you should harvest to obtain the specified cross.

Adjacent Plant: This is the seed next to the harvested plant. This is the seed needed to initiate a cross between two seeds.

Grow Time: This is how long (in Earth Days) the seed will take to grow from seed to harvest. The grow times do not take into account for fertilizing. They represent the actual grow time without fertilizing. It is possible to reduce the grow time by using Fertilizer, however, there is a limit to how much you can use before it becomes ineffective. Please see the Fertilizer Analysis page for an in-depth discussion on the effects of fertilizer on plants.

Alt. Cross: Many crosses have the potential to produce two different types of seeds. If a cross is known to produce another seed the alternate crossed seed will be shown here with a link to the respective seed.

Efficiency: This is how efficient a cross is (it is NOT a percentage). The higher the value the more efficient. This is explained in detail below.

Crop Yield *: The number of crops yielded based on the soil type used. Order is:

G1-3 La Noscean & Thanalan / G1 Shroud / G2 Shroud / G3 Shroud.

Seed Yield *: The number of seeds yielded based on the soil type used. Order is:

G1-3 La Noscean & Thanalan / G1 Shroud / G2 Shroud / G3 Shroud.

* found on seed details page


The Efficiency System is a scale that determines the cheapest, quickest and most reliable way to obtain a cross for a specified seed. Each cross takes into account the Availability and Cost of each seed as well as the Grow Time of each seed and whether or not it is a Two Way cross or produces alternate seeds. Keep in mind, these are NOT percentages.

Each cross has an Efficiency value along with a colored icon next to it. The closer the Efficiency value is to 100 the more efficient the cross. The cost of each seed was determined from the Leviathan server, but should be generally the same across all servers, however, this will of course lead to some inaccuracies in the output so be sure to check current Market Board prices before committing.

An explanation of the icons and weight categories is listed below:

Icon Explanation

Most efficient; use any (preferably the highest value)
Can become costly; use if no green available
Very expensive & time consuming; avoid at all costs

Abundant (Tier 1 Seeds & Grade 1 & 2 Nodes)
Normal (Tier 2 Seeds & Grade 3 Nodes)
Rare (Tier 3 Seeds)

Cheap (< 20,000 gil)
Average (Between 20,000 & 50,000 gil)
Expensive (> 50,000 gil)

Grow Time
Takes the average grow time between the seeds

Alternate Crosses

It is preferable to use a cross that does not produce alternate seeds. So if a cross only produces one seed this will raise the efficiency of the cross.